The Perception of Overtourism from the Perspective of Di ﬀ erent Generations

: The problem of overtourism, i.e., tourist congestion in visited places, and the negative impacts of tourists on the environment and residents, are increasingly noticeable with the increase in popularity of tourism. In addition, human impact on the environment is often negative in relation to the assumptions of the concept of sustainable development. However, the attitude of tourists to the problem of overtourism may vary depending on their ages, because, as in every aspect of life, there are intergenerational di ﬀ erences arising from the political, economic or technological development of the times in which a given generation grew up. The main purpose of the article is to examine the public awareness of the phenomenon of overtourism in the context of intergenerational di ﬀ erences, as well as to determine the impact of tourists on the places visited and the local community. The study was conducted on a sample of 386 respondents representing the X, Y, and Z generations. The study results showed that there is awareness among all generations of respondents about the problem of overtourism, although indi ﬀ erence to this phenomenon was demonstrated by the youngest respondents (Z generation). The respondents also agreed on individual elements of their own impact on the environment and residents, but with di ﬀ erent determinations. The article ends with recommendations on the introduction of various management practices that should be implemented in order to make tourism more responsible and sustainable in the future. It is proposed that a road map should be compiled at the local level for sustainable tourism development.


Introduction
The world's population is constantly growing, as is the number of tourists. The dynamism of tourism development in the world is due to, in particular, the industrial revolution, i.e., it is associated with the development of transport, speed of movement and the increase in wealth of individual countries and their inhabitants. This translates into an increase in the number of people who can afford to travel more frequently. In 2018, international tourist travel amounted to 1.4 billion people, while 710 million tourists come to Europe [1]. Along with the increase in the popularity of tourism, the problem appears with tourist congestion in visited places and the negative impact of tourists on the environment and residents. The tourism economy is one of the main contemporary sources of organized human impact on the landscape. However, this impact is often negative and interferes with the idea of sustainable development. Therefore, there is a tendency to implement the concept of sustainable development in tourism. According to the World Tourism Organization (UNWTO), we call sustainable tourism the kind that fully takes into account its current and future economic, social, and environmental impact, meeting the needs of visitors, industry, the environment, and host communities. increasing by 49.2% [2], while 2018 global earnings amounted to 1.7 trillion [1]. More than half of EU residents' overnight stays (55.2%) were spent in rented accommodation [15]. Therefore, hotels or similar places need qualified staff to provide tourists with accommodation and other tourist services. In 2016, over 13 million people were employed in the tourism industry in EU countries [15]. Consequently, employment in tourism translates into macroeconomic indicators for the region. In the EU, 21 of 30 regions with the highest tourism intensity have an unemployment rate below the national average [16]. The data presented above indicates a number of financial benefits, which are obtained by destinations eagerly visited by tourists.
Analyzing the number of tourists, we can see their steady increase since 2009. In 2018, international tourist arrivals increased by 5% and reached 1.4 billion people. [1]. Europe was visited by the largest number of tourists (710 million), while the largest increase in the number of tourists was noted in Asia-Pacific and Africa (7%) [1]. In 2017, more than half (58%) of the total nights spent by nonresidents in the EU were spent in Spain, the United Kingdom, Italy, and France [15]. In turn, 62% of EU residents made at least one personal trip in 2017, while Finns did it the most often (91.3%) [15]. Analysing European statistics, Poland stands out the most, as in 2018 it was visited by 19.6 million tourists [2]. In this country, one can observe a continuous increase in the number of accommodation facilities provided to tourists. In Poland, in the first half of 2019, compared to the first half of 2018, there was a visible increase in the total number of tourists using an accommodation facility by 6.1%, as well as the number of overnight stays by 6.5% [16]. At the same time, there was an increase noted in the number of foreign tourists by 4.5% and the number of nights spent by them by 5.1% [16]. However, the average share of overnight stays provided to foreign tourists in the total number of overnight stays for the EU was 49.2%, while for Poland it was only 19.9% [2], which was the second-lowest share of tourists among the surveyed countries. This indicates that the interest of tourists in Poland is growing, despite the fact that now there is a low level of foreign tourists' participation. Therefore, it is necessary to explore the problem of overtourism in Poland, because that phenomenon will increase in strength.
Analysing the data of tourism intensity, one can observe a large variation in the scope of guest nights spent in tourist accommodation establishments per inhabitant. Among European countries in 2017, the highest rate was recorded in the following countries: Malta (20.8), Croatia (20.7), Cyprus (19.6), and Austria (13.8), while there was an average of 6.1 guest nights throughout the EU [15]. The presented data indicates that the number of tourists is constantly increasing, which causes high tourist traffic on access routes, in public transport, as well as in the places visited. Moreover, estimates indicate that in 2030, 1.8 billion tourists in the world will cross borders [9]. In 2017, 62% of EU residents made at least one personal trip [15]. Therefore, in order to ensure sustainable development, it is necessary to take action in the field of sustainable tourism.
The 2030 agenda aims to inspire industries to take measures to maintain sustainable development, including in the area of tourism. This is reflected in Goal 8, "Decent Work and Economic Growth"; Goal 12, "Responsible Consumption and Production"; and Goal 17, "Partnerships for the Goals". Moreover, task 8.9 was formulated stating that, by 2030, policies should be developed and implemented to promote sustainable tourism that creates jobs, and promotes local culture and products. In order to measure the degree of implementation of this measure, an indicator has been developed, which is calculated as a percentage of tourism in relation to GDP. The value of this indicator in 2017, both on a global scale and in Poland, was 0.1%, and its value increased compared to the previous year [15].
Unfortunately, with the expansion of tourist traffic, incidents related to its burden on the natural and cultural environments of tourist areas are increasingly observed. To support sustainable tourism development practices, the World Tourism Organization and the United Nations have developed a Development Program. In it, they recommend that donor countries need to pay special attention to the challenges and needs of developing countries, and that tourism decision-makers in developing countries can attract more funding if their tourism activities focus on those areas that are most relevant for donor countries [3]. In order to ensure sustainable development, it is necessary to identify factors affecting the sustainable development of tourism in the context of a given location. Local authorities should support entrepreneurs and provide financial support so that they will be able to develop business models that foster inclusive green growth-in particular in those areas where voluntary action is not sufficient to achieve the SDGs [3]. In order to manage tourist traffic and preserve sustainability, a number of different actions are proposed. Actions are proposed to minimize the anthropogenic impact on the environment and to protect the natural environment and culture [17,18]. In turn, other recommendations were formulated to ensure the sustainable development of entertainment tourism [19].
It becomes necessary to conduct research in the field of sustainability in tourism, which is emphasized in the literature [20]. In particular, research on tourists' awareness of their impact on sustainable development appears to be important. Sustainable tourism has been described as tourism "that takes full account of the current and future economic, social, and environmental impacts, addressing the needs of the visitors, the industry, the environment, and host communities" [9]. It indicates that attention should be focused on time, type of influence and various stakeholders. The group of stakeholders is diverse, as it includes both residents and visitors, for whom the expected benefits of tourism are different. Tourists expect access to tourist attractions and amenities for them, while residents demand respect for their rights regarding access to urban infrastructure, public services, and improvement of quality of life.
It should be emphasized that stakeholders have different levels of awareness about the economic benefits of sustainability. This is confirmed by the results of research that showed that the perceptions of the sustainability of the stakeholders involved in rural tourism development were very different [20]. Moreover, tourism enterprises often lack awareness of how efforts and investment in sustainable business operations can also significantly boost competitiveness and profitability, while increasing customer and host community satisfaction [3].
The basic prerequisite to undertake research and to formulate the research problem is the significant increase in the number of tourists, noticeable for years, and the continuous growth of the tourism sector (as estimated by the World Tourism Organization (UNWTO)) by 3.3% annually until 2030 [9] (p. 4). Tourists visit areas of natural and cultural interest, as well as for entertainment. More and more tourists visit residential areas [18], while entertainment attractions are located in many places to encourage tourists to travel and provide them with joy [20]. The increase in the number of visiting tourists, as well as the development of spending time, will have an effect on other sectors of the economy and enterprises. Moreover, adverse climate change, environmental degradation, population growth, and the growing awareness of buyers about their chosen solutions means that a new approach is needed to build a sustainable and disaster-proof future strategy for society and all organizations. Therefore, it is necessary to take actions, in the field of sustainable tourism development. Such actions were taken, for example, by the Global Sustainable Tourism Council (GSTC), whereby it developed criteria/standards for sustainable development in tourism. These criteria are organized into four pillars [19]: impact on culture; • environmental impact (including resource consumption, pollution reduction, and preservation of biodiversity and landscapes).
For this purpose, it is necessary to examine the level of public awareness of its impact on ensuring sustainable development. This becomes important because of the impact that stakeholders have in economic, social, and environmental terms in a given area [21]. The divergent needs of tourists and residents cause a conflict of interest in the area of tourism, in particular in terms of their impact on the economy, society, and the environment. It is emphasized that sustainable tourism and overtourism are an important context that affects the right to travel and the right to live [18]. Certainly, a discussion is needed on how to achieve sustainable development, in particular in the area of growing tourist traffic.

Overtourism
The notion of overtourism in literature appeared relatively recently, which is why in many languages there is not yet a shaped translation of this concept. However, the presence of this phenomenon is often observed in the media, which reports on the problems of congestion and the negative impact of tourists on the environment, and on inhabitants in popular tourist destinations [3,4,22,23]. Although the term has only appeared in scientific publications only since 2017 [24], this does not mean that this problem has not been raised before. In the 1970s, special indicators were developed to determine the optimal size of tourist traffic for various regions: an absorption indicator, a capacity indicator, and a flow indicator [25]. We also see the beginnings of measuring changes in residents' attitudes towards tourists in the work of Doxey [26], who lists four phases: euphoria, apathy, annoyance, and antagonism. However, in 1980, Butler [27], in the concept of the tourism area life cycle (TALC) points out that tourist destinations negatively feel the consequences of their success. Although the term 'overtourism' was not used at that time, previous publications clearly revealed the potentially negative effects of the rapidly growing tourism sector. The TALC concept already contains elements that quantify overtourism, by using the terms 'tourism capacity' and 'absorbency'. Four decades later, the same author tackles the topic of overtourism to its full extent [28].
The World Tourism Organization (UNWTO) defines overtourism as: "the impact of tourism on a destination, or parts thereof, that excessively influences the perceived quality of life of citizens and/or quality of visitors' experiences in a negative way" [3]. In contrast, the EU [24] in its research on overtourism describes this phenomenon as: "the situation, in which the impact of tourism, at certain times and in certain locations, exceeds physical, ecological, social, economic, psychological, and/or political capacity thresholds". The definition of the phenomenon of excessive movement around the world, with the following references to literature, both historical and current research, is discussed extensively by Kruczek [29].
Currently, according to recent studies [30][31][32], excessive tourism causes, among other issues, alienation of residents, a worsening of the tourist experience by visitors, an overload of infrastructure, damage to the natural environment, and a threat to culture and heritage. Every year, the number of cities in the world, such as Venice, Barcelona, Dubrovnik, Amsterdam, Berlin, Prague, Hong Kong, Rio de Janeiro, Shanghai, Palma de Mallorca, and Lisbon [33]; or in Poland, such as Zakopane and Kraków [34], that struggle with the problem of excessive tourist traffic, increases.
There are three dimensions to the negative impact of overtourism [24] (pp. 87-88): environmental, economic, and social. The consequences of excessive tourism for the natural environment primarily include overpopulation and devastation in places attractive to tourists, including natural, historical, and architectural places, a strong or noticeable contribution to water, land and air pollution, and problems with solid waste removal [24] (pp. 87-88). In places, where the number of tourists increases significantly, there is a greater economic dependence on tourism, including the strong impact of seasonality and degradation of other sectors or types of employment. Beyond the problems concerning the negative impact of overtourism on the environment and the economy of individual cities, the social dimension is also significant. The growing number of tourists causes many burdens and inconveniences for the local community. It is observed that adaptation to tourists occurs first, and then to residents [8]. Therefore, the implementation of stricter regulations for tourists is recommended to ensure inhabitable, tourist-friendly cities [35].
In particular, the young generation can be a big problem for the local community, because their way of spending time disturbs the peace in tourist destinations. Young people are eager for new experiences-for many of them traveling is the goal of life, their passion. The social effects of overtourism are also the worsening of (perceived) security, due to increased crime and violence, problems related to uncivilized behavior, alcohol consumption, prostitution, gambling, and drug trafficking. It also leads to possible misunderstandings or hostility (e.g., social conflicts and protests) [24] (pp. 87-88). In addition, it can also weaken local cultural traditions, moral values, and standards, leading to a loss of community spirit and pride, as well as a loss of the given country's cultural identity. Cities recognize the problem of overtourism and are looking for different solutions [2,4,5,7,8,36]. There is a lively discussion regarding the rights of tourists and residents [37]. Politicians, city managers, and scientists are wondering how to solve the problem of tourist congestion [38] having a negative impact on the local community and the environment [22].
Various kinds of strategies and countermeasures are adopted. For example, the following can be mentioned [9] (p. 10): promoting the temporary dispersion of visitors, stimulating the creation of new routes and attractions for visitors, communication, and the involvement of local stakeholders and visitors. Solutions are being implemented for the adaptation of tourism practices, increasing the capacity of existing systems, and improving residents' perceptions of tourism, also by means of "smart" technological solutions [8]. It is also worth providing local communities with the opportunity to enjoy tourist attractions and create places that benefit both the residents and visitors.
In turn, EU recommendations [24] (pp. 87-88) contain, among other items, such guidelines as conducting more systematic research on the issue of excessive tourism in rural areas, coasts, and islands, as well as natural and cultural heritage; initiating debates on tourism development; and management of economy sharing platforms, such as Airbnb [39]. Moreover, more attention was paid to the qualitative elements of tourism development (profitability, local employment, fair pay rates) and not just the increase in the number of tourists. An important aspect is also supporting the monitoring of the "moods" of tourists, hosts, and (other) residents to earlier notice psychological and social problems during the excessive development of tourist traffic. Moreover, managers in tourist cities should collect data on the stay duration, expenditure, and/or intention to act, in order to identify profitable markets that are more economically, socially and environmentally resilient [6].
The problem of excessive tourism can also be solved by striving to develop sustainable tourism destinations, in this way balancing the equality of the right to travel with the rights of residents. This requires the involvement and cooperation of a wide range of stakeholders, thanks to which it is possible to implement tourism planning and management measures that will be accepted by everyone. An example is the Paris Agreement on Climate Change, which helped mobilize individuals, industries, governments, and other organizations to cooperate, in order to reduce greenhouse gas emissions [14]. However, to adopt some general principles and assumptions, it is necessary to thoroughly investigate and describe this phenomenon.

Travel by Generations
Assuming that the generation is an identifiable group of people, who share similar birth times and experience of important events at development stages, one can now point to four generations of people indicated in the scientific literature, ( [11,13,40], ([41] p.234), ( [42] p.307), [43]) those active and physically fit enough to enjoy tourist trips [44]. Namely, they are [43]: The next generation after Z is the Alpha Generation (born after 2010). It is a group of children aged nine years and younger, so they are not considered in the elaborated study.
The Baby Boomers generation nowadays is taking an increasingly active part in recreational activities, such as hiking, diving, surfing, climbing, and traveling to various places around the world. The growing mobility of this generation is associated with their well-established social position, financial possibilities, and having more free time because their adult children have started their own families. The eldest of this generation are already retired and those who are still working need more time to relax and relieve stress. The needs and interests of the baby-boom generation are changing because this generation has become healthier and wealthier than in previous years [45]. As the Naidoo research [46] shows, the main motivators in making tourist trips of this generation are taking pleasure and joy from traveling, soothing stress and tension, relaxation, the need for change and novelties, as well as the an appreciation of the attractiveness of the physical environment, and caring for better health.
Generation X are people born in 1965-1977, who are currently 37-49 years old, and who grew up and entered adult life in Poland during the restructuring of the economy. Inflation, increased unemployment and employment instability forced them to accept temporary contracts and accept jobs below their qualifications. The times in which they had to start their careers made them entrepreneurial people, but also exacerbated the atmosphere of uncertainty and fear associated with the possibility of losing their jobs. However, as mature people, they are most often the owners of large enterprises, as well as supervisors and teachers for Generations Y and Z. Similarly, in the United States, Generation X is described as born in bad economic conditions [47], and their attitudes and beliefs were shaped by the first war in Iraq [47], the climate of school shootings, reality shows [48] and HIV epidemics. Family is first for this generation, which is why they plan trips with the family and children to the sea, mountains, or lakes. They also often visit popular cities, where you can find interesting monuments or rich history. When choosing to travel abroad, they usually look for quiet, recreational places, or interesting cultural monuments. Despite the fact that people from this generation were born in analogue times, they fit perfectly into the modern digital world and modern technologies, which is why they willingly use the Internet when planning and booking their tourist trips.
The phenomenon that shaped Generation Y (Millennials) was globalization, which caused the blurring of barriers between countries, internationalization of enterprises, merging cultures, and increasing access to products and services from around the world. Double earnings of parents have become a standard, guaranteeing good conditions for the personal development of their children. Respect for ethics, multiculturalism, awareness of social problems, and the possibility of using information and communication technology are of great importance for this generation. This generation is extremely mobile, willingly travels, moves from one place to another, and the decision to emigrate is ready to be made quickly and not necessarily for economic reasons. The circle of friends of this generation is not limited to people living in one place, but they have friends all over the world. Their main values are independence, ambition, creativity, innovation, and development. Representatives of Generation Y travel more than their predecessors, they visit and explore a greater number of destinations, spend more while traveling and are eager for interesting experiences and information [46,49]. Moreover, as research by Dębski [50] and Xiang, Magnini, Fesenmaier [31] indicate, people from Generation Y show a strong need to use the opportunities generated by the Internet and social media while planning and sharing their experiences during and after the journey. Research by Santos, Veiga, and Aguas [51] shows that Millennials are an increasingly important and larger group in tourism, which is also associated with their great need to travel. Moreover, they highly value travel comfort and follow a variety of adventures, seek unique experiences, and do not just expect passive recreation. Generation Y tourists are increasingly avoiding mass tourism, wanting to be seen as travelers rather than tourists [51]. This is associated with greater independence in planning trips and also with their concerns about the environment [52]. In comparison with Baby Boomers and Generation X, Generation Y is much more active when it comes to planning travel trips or booking accommodation through the Internet (dedicated websites, e.g., booking.com), or using social media (such as TripAdvisor) [53].
Despite that the representatives of Generation Z have many features in common with representatives of Generation Y, there is agreement among researchers [12,44,54] of this generation, that although some features are more visible in them, they are significantly different in many respects. Generation Z is a generation open to the world and novelties, not only technological but also those related to exploring new places. This is a multitasking generation, where social media is their main form of communication. A characteristic feature of this category is often the preference for virtual relationships, rather than establishing real interpersonal relationships. People from Generation Z are very open to the world and willingly undertake various forms of tourist activity, although they often lack financial resources because they are not yet professionally employed and are dependent on their parents. Therefore, due to financial restrictions, this group dominates domestic recreation, with family or friends. A survey conducted by Expedia Group Media Solutions in 11 different countries in 2017 and 2018 revealed that representatives of Generation Z most often travel to rest (59%), visit family (41%), take part in special events (26%), or for entertainment purposes (21%). The analysis of Expedia Group Media Solutions also shows that 84% of people from Generation Z think that social media plays an important role when planning travel. On social networks, they look for promotions, among other things, as well as getting inspiration to travel by viewing photos and videos published by friends or experts. It is also worth noting that as many as 66% of the representatives of Generation Z during trip planning are not committed to a specific destination and are open to inspiration regarding the holiday spot and the place of departure (74%).

Materials and Methods
In order to get the answer to the research questions posed in the article, it was necessary to conduct empirical research among people from different generations, where the division of society into different groups was made on the basis of literature analysis. The main criterion for dividing the respondents was the generation the respondent came from. They were determined based on the respondent's year of birth. The sample was stratified random sampling in Poland. However, the respondents had to have one consistent feature, which was experienced in the field of tourist trips. A pre-test was conducted and some adjustments were made before sending the questionnaire. The invitation to the survey was distributed by 424 emails in October 2019. In order to reach people of different ages (generational layers), who have undertaken tourism activity in recent years, emails with the link have been shared on discussion forums and travel groups on social media.
The research questionnaire contained seven questions, two of which had an extensive structure, including testing the agreement of respondents with the opinions presented on the occurrence of overtourism and their own impact on the tourist area. The choice of questions was deliberate, as they were to indicate selected phenomena that resulted in the occurrence of overtourism in tourist destinations. In several cases, the question was repeated in the opposite context to verify the reliability of the answers given. Thanks to the Likert scale used, it was possible to choose one of five response variants, arranged symmetrically, in terms of positive or negative reference to the issue being addressed. The choice of an intermediate answer meant a neutral attitude to the issue under review, or no opinion on a given topic. The obtained responses were quantified in such a way that a positive attitude towards a particular phenomenon was assessed by a value of 2 or 1 when the positive response was supported only partially. In the case of a negative rating, the grade awarded was −2, unless it was partially negative, then the grade −1 was allocated. The neutral grade was awarded with a value of 0. Meanwhile, the average rating of a given response variant higher than zero means a positive attitude of all respondents to the issue. A negative average value indicated a negative attitude of all respondents to a given opinion. This made it possible to compare the responses given by nonparametric statistical tests in individual groups designated by generational identification. The main questions were followed by a record specifying their gender, age, and education, as well as tourist experience, differentiated by the length and frequency of tourist trips.
After the initial selection of collected questionnaires, 396 respondents were qualified for further analysis, which exceeded the minimum random sample size estimated at 386 questionnaires (for the assumed maximum statistical error rate of the sample of ±5% and the confidence level p = 0.95).
The elaboration of the collected data involved the performance of statistical analysis, of both one-dimensional (in the form of classical or positional descriptive analysis) and two-dimensional (in the form of analysis of the relationships of pairs of tested features) natures, and even in a multidimensional dimension, by means of correspondence analysis [55]. In some cases, the level of significance of differences between the obtained average values was also studied. For comparison of two groups of variables with a distribution different than normal, the U (Mann-Whitney) test was used [56]. The significance of differences between structure indicators was verified with the Chi-squared test. When verifying statistical hypotheses, the statistical tests were used, taking into account significance at the level of α ≤ 0.05. In the interdependence analysis, Pearson's linear correlation coefficients and t-Student significance test for the correlation coefficient were used [57].
Correspondence analysis is a method of multivariate qualitative analysis, using a two-dimensional comparison of many variables by using their taxonomic distances. The results of correspondence analysis are presented in two-dimensional drawings of mutual relations of the qualitative responses obtained.

Results of Research
The survey involved 386 respondents, among whom 59.8% were women and 40.2% men. Taking into account the criterion of division of the respondents according to generations, the survey sample included 58.8% of people from Generation Z, 21.5% of people from Generation Y and 19.7% of people from Generation X. The BB generation also took part in the study. However, it was not possible to obtain sufficient numbers of this group of respondents (<30). This is not a sufficient representation of the respondents on the basis of which it is possible to infer, therefore this generation was omitted in further analyses. Table 1 gives the structure of the respondents. It already covers only three generations. Undoubtedly, this is one of the limitations of the presented study, which is why it will be undertaken in subsequent studies of the authors. Among the respondents, well-educated people predominated-over 60% of people had at least post-secondary education (first-degree graduates). High school graduates constituted 38.6% of respondents (Table 1). The surveyed people showed a very diverse length of tourist trips including at least one night. More than every fourth respondent usually decided on 1-3 days' weekend trips (27.0%) or trips lasting 4-6 days (26.5%). In terms of the frequency of trips, the overwhelming majority (56.3%) go several times a year, and every fourth (28.3%) at least once a year. Every third respondent (33.6%) undertook trips of varying lengths.
Respondents were asked about knowledge on overtourism. Nine out of ten respondents (88.4%) stated that they knew of this phenomenon. However, every fifth respondent (20.7%) heard about this from the media or from friends, while 67.7% of people came across this phenomenon directly.
Analyzing the responses of the respondents in general (without a generational breakdown) to the questions in which the respondents had to agree or disagree with the opinions presented to them, one can indicate the opinions for which a high degree of agreement has been noticed, as well as several of those to which the respondents disagreed. These opinions can be ranked according to the decreasing degree of agreement of the respondents. This is the following order: According to the adopted methodology for assessing individual issues, the following intergenerational differences can be noticed:

•
Indifference to the phenomenon of overtourism was demonstrated by the youngest respondents (Z generation). Their results of agreement with the opinion that overtourism is not their concern are similar and positive, which means that they generally agree with this opinion. Intermediate groups of respondents (X and Y generations) do not agree with indifference to this phenomenon. Comparative analysis between the generations confirmed that there is a statistically significant difference between the average ratings of the X and Z generations (p < 0.001) and Y and Z (p = 0.020).

•
In general, all respondents agree that tourist visits are associated with benefits for residents. Generation Y agrees with this statement much more often than people from other generations, in which there is a greater tendency to an intermediate response (difficult to say/I do not know).

•
In the case of opinions that the popularity of the phenomenon of overtourism results from exaggerating its real significance, the responses are unambiguous. All generations negatively refer to this statement, which means that in generations X, Y, and Z the problem of overtourism is perceived as serious.

•
The distribution of responses on the subject of higher water and electricity consumption during tourist stays is interesting. The respondents from all generations disagree with this opinion, while it is twice as emphatic in Generation X than in the Y and Z generations, which show great similarity in this respect (p = 0.767).

•
The opinion on whether during the tourist trip the respondents were allowed more than in everyday life did not gain approval. In general, the ratings obtained were negative, and in Generation X, strong opposition to this opinion was more frequently expressed (−1.14 ± 1.08).
• A material factor related to the opinion that a tourist has the right to use the destination freely, since they pay for it, did not gain the approval of the X and Y generations, while the people of Generation Z rather agree with this view (0.41 ± 1.17).

•
For all generations of tourists, the opinion of residents on their behavior in the destination turns out to be important. This is indicated by average ratings in all groups, with higher averages again in generations X and Y. • The above result seems to be consistent with what was obtained in the study on the responses of respondents from different generations on their opinions about their manners during the trip. All generations agree that their civilized behavior does not depend on where they are, and therefore is identical in a holiday spot and the home environment.

•
In the next question, in order to control the reliability of responding, one of the previously asked questions was repeated (but in the opposite context). It was a question about similar consumption of natural resources at home and during a tourist trip. The answers obtained confirm the reliability of the research tool, because the average scores are very similar to those given when asked about water and electricity consumption. Of course, the results were positive this time, because they were put in a positive context.

•
The respondents generally strongly agreed with the statement that they do not litter the environment, do not make noise, and turn off electrical devices while leaving the hotel room. What is noticeable here is the fact that the frequency of confirming this opinion decreases with the increasingly lower age of respondents (Table 2). Table 2. Results of average agreement assessments of respondents from different generations with the opinions presented.

Mean ± Standard Deviation (Median)
To be honest, it is not my concern-I want to relax when I feel like it 0. 49  A comparative analysis in terms of average ratings of individual generations proves many previously observed similarities between generations, but also a lot of differences, determined on the basis of a nonparametric test of the significance of differences between means ( Table 3). The most significant differences between individual pairs of generations were observed in the case of X and Z pairs (p < 0.001). In many cases, these generations expressed opposite opinions, such as in the case of indifference to their own impact on the tourist area, or regarding the requirements for the destination in which they leave their money. Or they had similar opinions, but with radically different firmness, as in the case of allowing oneself more when on holiday, or indifference to the opinions of residents about their behavior. Table 3. The results of the nonparametric test of the significance of differences between average ratings for agreement with opinions in individual generations.

XZ XY YZ
To be honest, it is not my concern-I want to relax when I In terms of similarities, the fewest discrepancies can be seen between the X and Y generations-there are just two results indicating significant differences between opinions in these generations. The first relates to higher consumption of water and electricity during a tourist trip than at home (p = 0.026), while the second concerns the control question, i.e., the opinion that during a tourist trip they use natural resources in the same way as in their own environment (p = 0.041). The generation that disagrees less with the opinion that it consumes more water and electricity, as well as agrees less with using natural resources in the same way, is Generation Y.
The impact of individual generations on the area of tourist destinations and residents is similar, although with a varied impact. Representatives of all generations strongly indicate that their presence has an impact on the economic situation of residents. Other indications are no longer that significant (Table 4). Generation X, in addition to economic impact, notices its own impact on the satisfaction of residents with professional life (0.92 ± 0.81) and residents' sense of pride in belonging to the city (0.76 ± 0.76). They also perceive their own impact on residents' family, neighborly, and friendly relations (0.6 ± 0.74). This group of respondents generally did not show clear or even moderate opposition to the indicated elements of influence. If they disagreed with them, they usually described some factors as indifferent. Such a situation occurred in the case of their impact on the natural environment (0.01 ± 1.06), or the comfort and relaxation of residents on days off (−0.07 ± 1.02).
In the case of people from Generation Y, the strongest impact is similarly observed in the case of economic impact on residents (1.33 ± 0.79). A much lower, but clear impact, is seen in the case of a sense of pride in the resident's belonging to the tourist destination community (0.76 ± 0.77) and the impact on the satisfaction of residents with professional life (0.79 ± 0.77). Similarly, in the case of Generation X, likewise Generation Y generally does not expressly disagree with the opinions, but is neutral on the same factors as Generation X.
Generation Z also indicated its own economic impact, i.e., impact on living costs and income (1.14 ± 0.95). Similarly to all the analyzed generations, in Generation Z, there is seen to be an impact on the residents' satisfaction with their professional work (0.88 ± 0.83) and a sense of pride with belonging to a destination (0.83 ± 0.90).
Summing up the results from particular generations, it is worth noting that, in general, respondents pointed to the same elements of their own impact, but with a different firmness. Generations X, Y, and Z are very similar in their indications and intensity of impact. In addition, average extreme values (both the highest and the lowest) are seen in Generation Z.
The analysis of correspondence made in relation to the collected data allowed confirmation of several previously presented conclusions. The first of two visualizations ( Figure 1) presents a set of variables covering the diversity of respondents by the generations they represent, their gender, level of education, and tourist experience expressed in the length and frequency of tourist trips. Source: own work.
The analysis of correspondence made in relation to the collected data allowed confirmation of several previously presented conclusions. The first of two visualizations ( Figure 1) presents a set of variables covering the diversity of respondents by the generations they represent, their gender, level of education, and tourist experience expressed in the length and frequency of tourist trips. Figure 1 shows a clear separation of the locations of the Z generations from the generations X and Y, which are almost identical in their behavior. People from the older generation more often indicated that they had never heard of the phenomenon of overtourism, although the questionnaire explained the definition of this phenomenon and examples of behavior that could express it. Other generations more often showed the recognition of such a phenomenon (in the media or in person). Experience in overtourism did not depend on the gender of the subjects or the length of trips. The next set, obtained on the basis of correspondence analysis (Figure 2), again proves discrepancies in the responses given by generations. Generations X, Y, and Z show, in this respect, both greater tourist activities expressed in the length and frequency of tourist trips undertaken, but also knowledge of overtourism. Generation Z recognizes the phenomenon of overtourism in the media more often than generation Y and Z. People from Generation X most often have personal experience in this field.  The next set, obtained on the basis of correspondence analysis (Figure 2), again proves discrepancies in the responses given by generations. Generations X, Y, and Z show, in this respect, both greater tourist activities expressed in the length and frequency of tourist trips undertaken, but also knowledge of overtourism. Generation Z recognizes the phenomenon of overtourism in the media more often than generation Y and Z. People from Generation X most often have personal experience in this field.

Discussion and Conclusions
There are significant implications drawn from this study. The study showed that respondents most often take short trips lasting 1-3 days (27%) and 4-6 days (26.5%), which confirms the data collected by Eurostat, where [58] short trips dominated among the respondents (50.2%). The conducted research indicates that Generation Z is indifferent to the phenomenon of overtourism, based on which it can be concluded that they do not pay attention to the needs of others. This is confirmed by the research of focus groups, on the basis of which it can be stated that the main purpose of the respondents' travel was their own hedonistic experiences. This may indicate selfish behavior towards the residents of a given destination [59]. However, the authors suggested that with natural environments potentially offering a playground for the hedonistic experience, sustainability needs to be fully embedded in the destination management, with the preservation of natural environments becoming the central factor to attracting potential consumers [59]. The approval of the X and Y generations has not gained the opinion that the tourist has the right to use the destination freely, as they pay for it, and representatives of Generation Z rather agree with this view. Knowledge of these discrepancies in opinions may affect the choice of solutions used in destinations with the aim of solving the problem of overtourism. High demand causes, in many destinations, prices in bars and restaurants to increase, which makes services less available to the local community and some customers. Moreover, bars are closed down, so that hotels and apartments can be built in their place, which means that 18% of residents consider changing their place of residence [60]. Some of the destinations are considering implementing solutions aimed at attracting high-income tourists. However, this could lead to widening social inequalities. Therefore, it is necessary to develop solutions that ensure equal access to destinations for tourists with different incomes.. In turn, subsequent generations disagreed with this opinion, but it was twice as firm in Generation X than in the case of generations Y and Z. Natural resources are limited; therefore, according to UNWTO directives [3] or the GSTC criteria [19], tourists' awareness should be raised and rules for the use of natural resources should be established. This will require a redefinition of tourism, in order to place the rights of local communities above the rights of tourists for holidays and the rights of tourism corporates to make profits [61]. You can use information technology (IT) and social media (SM) solutions, which are being increasingly used by representatives of the young generation [45].
Tourism is a driving force for other sectors of the economy. It is developing very dynamically and brings great financial benefits to various stakeholders. However, apart from the obvious benefits, the tourism industry also has a harmful effect on the natural environment and the local community. As already mentioned, this phenomenon is called overtourism. The negative impact of overtourism can be considered in three dimensions [24] (pp. 87-88): environmental, economic, and

Discussion and Conclusions
There are significant implications drawn from this study. The study showed that respondents most often take short trips lasting 1-3 days (27%) and 4-6 days (26.5%), which confirms the data collected by Eurostat, where [58] short trips dominated among the respondents (50.2%). The conducted research indicates that Generation Z is indifferent to the phenomenon of overtourism, based on which it can be concluded that they do not pay attention to the needs of others. This is confirmed by the research of focus groups, on the basis of which it can be stated that the main purpose of the respondents' travel was their own hedonistic experiences. This may indicate selfish behavior towards the residents of a given destination [59]. However, the authors suggested that with natural environments potentially offering a playground for the hedonistic experience, sustainability needs to be fully embedded in the destination management, with the preservation of natural environments becoming the central factor to attracting potential consumers [59]. The approval of the X and Y generations has not gained the opinion that the tourist has the right to use the destination freely, as they pay for it, and representatives of Generation Z rather agree with this view. Knowledge of these discrepancies in opinions may affect the choice of solutions used in destinations with the aim of solving the problem of overtourism. High demand causes, in many destinations, prices in bars and restaurants to increase, which makes services less available to the local community and some customers. Moreover, bars are closed down, so that hotels and apartments can be built in their place, which means that 18% of residents consider changing their place of residence [60]. Some of the destinations are considering implementing solutions aimed at attracting high-income tourists. However, this could lead to widening social inequalities. Therefore, it is necessary to develop solutions that ensure equal access to destinations for tourists with different incomes.. In turn, subsequent generations disagreed with this opinion, but it was twice as firm in Generation X than in the case of generations Y and Z. Natural resources are limited; therefore, according to UNWTO directives [3] or the GSTC criteria [19], tourists' awareness should be raised and rules for the use of natural resources should be established. This will require a redefinition of tourism, in order to place the rights of local communities above the rights of tourists for holidays and the rights of tourism corporates to make profits [61]. You can use information technology (IT) and social media (SM) solutions, which are being increasingly used by representatives of the young generation [45].
Tourism is a driving force for other sectors of the economy. It is developing very dynamically and brings great financial benefits to various stakeholders. However, apart from the obvious benefits, the tourism industry also has a harmful effect on the natural environment and the local community. As already mentioned, this phenomenon is called overtourism. The negative impact of overtourism can be considered in three dimensions [24] (pp. 87-88): environmental, economic, and social. These include overpopulation and devastation in places attractive for tourists, destruction of the natural environment, strong seasonal influence, and an increase in the economic dependence of a given city on tourism, as well as the creation of many burdens and inconveniences for the local community. In particular, the young generation of tourists can be a big problem for the local community, because the way they spend their time disturbs peace in tourist destinations and can cause increased crime or problems related to uncivilized behavior. Overtourism is therefore, a significant barrier to ensure sustainable development.
The results of the conducted research indicate that nine out of ten respondents knew the meaning of the word overtourism and have met it. However, indifference to this phenomenon was indicated by the youngest respondents (Generation Z). Respondents of Generation X and Generation Y showed the least indifference to the problem of overtourism. The respondents also agreed on individual elements of their own impact on the environment and residents, but with different firmness.
Obtaining research results enabled the preparation of managerial and theoretical implications. Recommendations have been prepared for solving the problem of overtourism in economic, environmental and social aspects.
Residents of tourist areas gain economic benefits from tourism; however, the excess of tourist traffic causes conflicts in the social background, therefore, it is necessary to examine the expectations of residents to be able to see psychological, social, economic, or environmental problems. Doxey's [26] or Butler's [27] research on this subject is a good example of this. It is recommended to create a space for discussion, where stakeholders representing different generations would have the opportunity to exchange opinions on sustainable tourism, which would contribute to acquiring new knowledge, increasing their level of awareness in the field of overtourism, and developing various solutions to help solve this problem [19,32]. It is necessary to support this process by local authorities in order to take action to counteract the negative impact of tourism on the local community. It is worth having residents participate in it, which will help create optimal solutions. Moreover, it should also be discussed on forums to help engage Generation Z in discussions, for which social media is important, and appreciate group (crowd-related) problem-solving. This would help to compile strategic documents that would indicate goals and propose solutions in the field of solving the problem of overtourism.
Local authorities should monitor tourist traffic and collect data, including qualitative data, in terms of customer expectations and types of activity, which would allow the creation of road maps for sustainable tourism development. This could include, among other matters, encouraging the extension of stays; expanding the possibilities of spending time; and creating new attractions located in less populated areas, which could be less burdensome for residents. It is worth implementing initiatives that would support local businesses run by residents.
In order to counteract the negative impact of overtourism on the environment, it is proposed to implement smart technologies that would monitor the level of traffic in the city and prevent overcrowding in places attractive to tourists. It is also worth using SM to provide information encouraging tourists to respect local culture and the environment, as well as informing them of the negative effects of not respecting these principles. In order to minimize the negative impact of overtourism on the environment, acceptable levels of tourists' impact on tourist attractions can be defined through a participatory process involving all interested parties. This will make it easier for local communities to reap the benefits, create shared experiences of the city for visitors and residents, and help communicate with residents.
The presented article has its limitations, which is the limited territorial scope of research, as well as the limited number of respondents representing the BB generation. Therefore this generation was excluded from statistical analyses. The small sample of the BB population is most likely due to the way the questionnaire is delivered. The BB generation uses less modern technology, social networking sites, and forums. In order to examine this group of people, it should be considered to use face-to-face interviews based on a questionnaire in different tourist destinations.
In further research, the authors will examine the generational awareness of overtourism in other countries and make international comparisons. The authors plan to conduct further studies in cooperation with tourist resorts. This will enable to use the recommendations contained in the article. In particular, to increase the awareness level of generation Z, decision-makers should consider using IT technologies and social media, which are natural communication tools for this generation. Another intention of the authors is also to obtain the opinion of the BB generation, therefore the way of distributing the questionnaire will be changed from online to offline.