Can Post-Vaccine ‘Vaxication’ Rejuvenate Global Tourism? Nexus between COVID-19 Branded Destination Safety, Travel Shaming, Incentives and the Rise of Vaxication Travel

: Vaxication (i.e., post-vaccination travel) and branding destinations for COVID-19 safety have emerged as the cornerstones to fully rebound global tourism. Numerous destination brands are now stimulating tourism demand through realigned travel incentives speciﬁcally for fully vaccinated travelers. However, there is growing fear and incidents of travel shaming across destinations, especially due to the recent outbreaks of the highly contagious COVID-19 ‘delta and omicron’ variants. Addressing this critical research gap, the present study makes pioneering efforts to empirically examine the effects of COVID-19 branded destination safety (CBDS) on vaxication intentions, under the moderating inﬂuence of travel shaming and travel incentives. Drawing on study data from 560 fully-vaccinated residents from Hawaii, United States and structural equation modeling (SEM) with Mplus, the evidence suggests that the positive impact of CBDS on vaxication intention can be further strengthened by travel incentives, or weakened when travel shaming picks up more momentum. Besides the validation of newly developed scales, the study offers strategic insights based on dominant theories (e.g., theory of planned behavior and protection motivation theory) to interpret the changing tourism demand, and to transform the emerging challenges into opportunities through and beyond the pandemic.


Introduction
A sense of travel optimism continues to rise with the increasing scale of global immunization against COVID-19 and the cautious easing of the pandemic-induced travel restrictions (e.g., lockdowns, quarantines, and social distancing, etc.) [1,2]. However, the devastating effects of the prolonged pandemic on the global tourism industry (e.g., 84 percent overall decline in international tourism, a speculated loss of USD $4 trillion to the tourism-reliant global economy, and 62 million lost jobs, etc.) have caused a major paradigm shift for destination branding and destination safety, respectively [3][4][5]. Restarting tourism operations now requires destination reassurance for COVID-19 safety in order to attract fully-vaccinated travelers seeking reliable and safer options to travel [2,6,7]. In order to reopen safely, tourism destinations have started to rebrand themselves for the Destination branding in tourism literature has been justified as a source of the stimulation of customer satisfaction, attaining a competitive advantage through the creation of differentiation, and establishing a unique association with the destination [36][37][38], thereafter leading to customer loyalty behavioral intentions and repeated tourism [39,40]. Likewise, destination image has also been a popular subject for researchers and marketers [29]. Early studies in tourism validated the impact of positive destination brand image as a strong factor, significantly impacting the customer's visiting intentions [41]. Therefore, tourism destinations are being planned and marketed for a spirited image, unique perception, and associative knowledge to be utilized by the customer to identify and evaluate tourism places [31,42]. In this context, the theory of planned behavior (TPB) has widely been referred to in the justification of the travelers' behavioral intentions towards their destination of choice [43][44][45]. The TPB suggests that the consumer will choose to behave in a particular way if he perceives that his behavior will result in the desired outcome, while attitudes, social norms and perceived behavioral control are the key contributors of such behavior [46][47][48]. The application of the TPB validates the supposition that the tourists' positive/negative attitude towards the destination, social approval of the choice of destination, and perceived control over time and resources, etc., play a significant role in the choice of a tourist destination [43].
The outbreak of the COVID-19 pandemic, with more than 174 million confirmed cases and more than 3.4 million deaths worldwide, has had a critical impact on economies and businesses. Strict WHO regulations, country lockdowns, social distancing practices, quarantine, mobility bans, and travel restrictions have adversely impacted many industries and businesses, with tourism and hospitality being on the hardest-hit list. Being vulnerable to various political, environmental, societal, and economic factors, tourism has overall been a volatile industry [49]; however, its susceptibility to the recent pandemic is unmatched. It has been declared as the worst tourism decline of history, with a tourist mobility decrease of 78% and tourism-related job cuts of approximately 120 million [50]. Amidst the COVID-19 pandemic, destinations and tourism operators are battling to ensure the safety and protection of customers whilst maintaining their positive brand image and profitability. This momentum has led to the rise of a new marketing strategy, namely COVID-19 branded destination safety, which is the combination of destination branding and destination safety concepts. Furthermore, destinations' safety and security perceptions constitute the most influential element of tourist's choice, as well as destination brand image, which could lower or augment travel intentions towards the destination [51,52]. In light of this, COVID-19 branded destination safety refers to the branding of a tourism destination as a safe haven Sustainability 2021, 13, 14043 4 of 23 from the risks of COVID-19 [53]. In this respect, some destinations have started to host smaller tourist groups along with the organization of private tours with outdoor activities. Furthermore, COVID-19 branded destination safety implications include social distancing, contact-free services, gathering restrictions, hygiene and cleaning assurances, the accessibility of disinfectants and sanitizers, and the availability of health-check equipment, etc. [18]. Hence, COVID-19 branded destination safety is recognized as a critical element that is instrumental in boosting tourist confidence and impacting the travelers' destination visit intentions and behavior [12,[51][52][53][54].

Travel Incentives
In today's competitive market, targeting and achieving customer loyalty has been more difficult than ever before. Managing consumer behavior related to tourism and destination management requires a deeper understanding of consumers' travel intentions, attitudes, and behaviors flowing from holidays, vacation trips, and leisure activities. The use of travel incentives has been emphasized to be a valuable strategy in establishing favorable travel behavioral intentions and enhancing customer loyalty in the tourism sector [55,56]. Travel incentives refer to the promotions, discounts, enticements, offers, rebates, and concessions, etc., which are intended to motivate the customer. The significance of introducing incentives as a business-boosting strategy has largely been recognized in the literature, and has been advocated as an effective way of attracting travelers [57][58][59]. Zhu et al. [56] concluded that incorporating various incentives, including cost, discounts, and promotions, etc., is a critical demand management strategy intending to shape travelers' behavior intentions. The literature suggests that the decision on the choice of travel destination is influenced by the travelers' motivation, which is driven out by two factors called 'Push' and 'Pull' [60]. The push and pull framework indicates that these are equally important: the socio-phycological, external factors that motivate a tourist to travel are known as push factors, e.g., promotions and incentives, whereas the attributes and features of the destination used to attract a traveler are termed the pull factors [59,60]. Therefore, incentives are carefully designed to cater to the needs of the customer in order to stimulate their intentions to travel by targeting various psychological desires [55].
Furthermore, travel incentives and promotions are also acknowledged to be a useful revival approach worthy of consideration by governments and companies for boosting the country and tourism image by incorporating strategies including promotion communication and offering subsidized prices for the products and services related to tourism [61,62]. Greece, in an effort to revive itself from the reputation damage caused by the political unrest in the country, offered various price cuts in airfare, ferries, and hotels; Bali in 2002 and Thailand in 2014 were also seen to employ similar approaches of price reduction and promotional discounts intended to revitalize tourism and destination image [62]. Moreover, there is ample literature to support the employment of travel incentives as an employee motivation strategy in the organizations, where destination visits are used as a performance incentive offered to high-performing employees [63,64]; however, employee motivation-based travel incentives are not the focus of this study.
Similarly, as a COVID-19 pandemic retrieval strategy, in an attempt to save battered tourism industries, various countries are offering flight discounts, promotional vouchers for local attractions, discounted-to-free access to tourist sites, and even government-sponsored medical expenses for during-the-visit possible COVID-19 infection encounters [65]. Some of the travel incentives being offered by various branded destinations and countries include (but are not limited to): Mexico offering free hotels, rented cars, and discounted tourist destinations; Italy, with up to a 50% promotion in airfare and hotel accommodation; Cyprus paying all travel expenses including food and accommodation for anyone who catches COVID-19 during the visit; Uzbekistan announcing $3000 for traveler's catching coronavirus during the visit; and Emirates airline's year-long travel incentives for students by offering discounts, visa promotions and a free change of tickets, etc. [21,22]. It is thus evident from the literature that, as a post-pandemic revival strategy, the tourism and destination markers are reassessing their offerings and value propositions, and are incorporating various incentives and promotions as an effort to boost consumers' intentions to travel.

Travel Shaming
The outbreak of COVID-19 brought a major shift in lifestyles, patterns, and behaviors. Travel and mobility were some of the few first things which were linked to the spread of the virus, and consequently, as a preventive measure, lockdowns and travel bans were imposed immediately. Although, with time, the travel restrictions were eased out, there are still some apprehensions about leaving home, social mobility, and traveling [21]. There are health concerns related to catching and spreading the virus from one place to another; as a result, the concept of 'travel shaming' has recently evolved [17]. Travel shaming is traditionally used to embarrass people subtly and overtly by making them feel guilty about not being able to travel by showing videos and pictures of the visited places. However, the recent pandemic has altered the definition and the meaning of travel shaming altogether [66]. It has now been defined as a way of criticizing people who opt to travel during the COVID-19 pandemic. People are being judged for posting their travel details, videos, and pictures for being insensitive towards the adversities of the pandemic [14,15]. The new era of travel shaming is growing stronger with every passing day with the inclusion of additional shaming concepts, including mask shaming (for not being able to wear the mask), social distance shaming (for not being able to maintain a reasonable distance), and virus shaming (for catching the virus itself) [14]. Although the restrictions for hotels, airlines, travel and hospitality are being eased out, and although tourism and hospitality businesses have slowly started to venture out all over again, the travel-shaming attitude towards vacations and even business travel is loud and bold, making it a concerning issue for tourism and travel managers and marketers [17].
In the current pandemic, travel-shaming behavior can thus be justified in the light of the protection motivation theory (PMT). Rogers [67] suggested that the preventive behavior of an individual is the outcome of the motivation of an individual to protect himself from harm or threats. It is further proposed that fear-provoking communication can substantially influence behaviors. Further studies on PMT validated the theory that the consistent increase in the fear was arousing communication results in proposed adaptive behavior acceptance [68]. PMT has been studied extensively concerning travel behaviors and intentions [4,[69][70][71]. Risk perception is the center of attention of various researchers working on PMT and travel intentions. Perceived severity and perceived vulnerability are reported to be two critical factors in the shaping of the behaviors and attitudes towards travel [72]. Amid the COVID-19 pandemic, the rapid spread of cases, high death rates, preventive measures put in place by the countries and governments, and precautionary advisories by the WHO built the perception of the risk severity. Whereas the higher chances of virus transfer resulting from usual human contact reinforced the risk. As proposed by Rogers [67], the threat appraisal of COVID-19 results in a coping mechanism of mobility restrictions. Mobility is perceived as the main source of the spread of COVID-19, and hence is associated with illness and health risk [24]. Therefore, travel during the pandemic refutes the proposed adoptive behavior, thus leading to travel shaming intentions and behaviors.

Vaxication Intention
With the availability of various vaccines (e.g., Pfizer/BioNTech and Moderna) to curb the spread of COVID-19, social life is presumed to be resuming normalcy slowly and gradually. Social mobility, travel, and tourism are also predicted to be resuscitated once the larger population is assured of its immunity to COVID-19. Therefore, the COVID-19 vaccination-being the assurance of immunity against the virus-is emerging as an immunity passport which is required for entry into various countries, movement from one place to another, air travel revival, and travel to the favorite destinations for vacations [73]. For global travel, COVID-19 vaccination has been considered as a social accord, at least, if not a legal requirement [74]. Celebrating post-lockdowns and post-vaccine, there has been a notable upsurge in the travel, tourism, and hospitality, and the term 'vaxication' has been introduced as a new addition to the literature, referring to travel plans for vaccinated people (as a combination of 'vaccination' (vax) and 'vacations'). The vaxication trend is gaining popularity, promising a needed boost in the travel and hospitality industry. It is anticipated that, as a future trend, the vaccination and vacation promotion packages will be used by marketers to promote vaxication [74]. The president of a Denver-based travel company reported a 25% increase in travel and vacation enquiries after the COVID-19 vaccination was rolled out in the USA, where the nature of such vaxications are trips to celebrate the attainment of immunity against the deadly virus and the resumption of mobility [75].
Although there has been no empirical research yet that has examined this new phenomenon of vaxication, comprehending various grounded theories related to health, risk and travel can facilitate an understanding of the tourists' vaxication intention. Theories related to health risk perceptions and beliefs are used as a mechanism to understand the health-related decision-making process. The Health Belief Model (HBM) has largely been validated in the literature for the establishment of a relationship between health-related behaviors and acquiring health services [76][77][78][79]. The HBM suggests that a person's belief about the severity of, exposure to, and vulnerability towards the illness, along with perceptions about the possible pros and cons of the health intervention (the vaccine), develop their health behaviors [79]. The HBM has also been studied for the prediction of the behavior regarding the acceptance and adoption of the COVID-19 vaccine [79,80], and is one of the co-predictors for tourism intentions [81]. Similarly, heath risk has also been validated by the Protection Motivation Theory (PTM), where the perceived threat appeal (COVID- 19) and the coping mechanisms (vaccination) are advocated to be the substantial factors in the shaping of travel behaviors while choosing the travel destination [67,71,82]. Likewise, considering the health and safety concerns, the literature suggests an extension of the theory of planned behavior, emphasizing the incorporation of the impact of health and safety with the inclusion of the perceived knowledge of COVID-19 and psychological risk as prominent factors impacting the attitude, subjective norms, and behavioral intentions to travel to safe destinations [52,83]. The vaxication movement is still in a premature state because the pandemic has still not been called off; therefore, the impact and consequences of vaxication on the tourism and travel industry are yet to unfold. Despite gaining the spotlight in global tourism very recently, there has not been any empirical research on vaxication yet. Vaxication has emerged as a favorable trend, potentially capable of the revival of travel and tourism by assuring the necessary health and safety protocols, including the COVID-19 vaccine as a prime requirement for traveling to a favorite destination [73][74][75].

CBDS and Vaxication Intention
The COVID-19 pandemic has had an overreaching and profound impact, radically changing the way the travel and tourism industry operates [18]. Researchers have emphasized the need to investigate and discover ways for the travel and hospitality industry to recover from the adversities of this pandemic, and to identify the strategies for the post-COVID-19 sustainability of the tourism and hospitality industry [84]. In order to ensure the well-being of the people and to plan a sustainable resilience strategy for the revival of tourism, it is paramount to ensure the safety of the tourism destination. It is further evident that tourists' safety and security are surfacing as a critical determinant in uplifting tourist confidence and impacting the travelers' intention to visit [12,[51][52][53][54]. Furthermore, the literature also advocates the safety factor to be a significant factor for ensuring competitiveness in the tourism industry [85]. Proposing a charter for the travel and hospitality industry, Chang, McAleer, and Ramos [84] stressed ensuring social distance regulations at the tourism destination, travel and entry rationing, controlling medical and health situations at the tourism destinations, and managing tourist hotels and accommoda-Sustainability 2021, 13, 14043 7 of 23 tions, etc., as post-pandemic ways forward towards sustained tourism industry. A study on post-pandemic travelers' behavior revealed a major shift in the marketing and promotional strategy of the tourism industry, with an increased focus on alternative methods of communicating and interacting with travelers [86].
The literature suggests a major shift in travelers' decision-making processes [2,87]. Referring to the theory of planned behaviour (TPB), prior studies suggest a significant link between a positive/negative attitude towards the destination, social approval of the choice of destination (social norms), perceived control over time and resources (perceived behavioral control), and the desire to visit/revisit a destination [43]. Moreover, the extended Theory of Planned Behaviour is relevant even further in justifying the vaxication intention. Post-COVID-19 mobility, perceived risk, safe global travel intentions, and safety behaviors are suggested to impact various dimensions of the TPB, and are thus advocated to be added to an extended TPB model [52]. Realizing the significance, countries and tourism operators have already started marketing destinations by highlighting the safety precautions, social distancing assurance, free hospitalizations, medical and illness insurance for COVID-19related illness, and financial support for catching coronavirus during the visit [21,22].
Amidst the pandemic, the tourism associated with the branded destination is anticipated to be translated in terms of the vaxication intention of the customers. Vaxication intention is principally based on the assurance of the safety precautions to curb the adverse effects of the virus (via vaccination), and to celebrate the successful revival of global tourism (in response to the adversities of COVID-19) by the post-vaccine intention to travel [75]. Despite being fully vaccinated and having decided about traveling, consumers will continue to live in a pandemic environment until the realization of a foreseeable future. Therefore, it is anticipated that as a psychological, social, and legal agreement, the vaxication will mainly be planned for those destinations that assure COVID-19 health and safety protocols and conform to the precautionary advisories of the WHO. Marketing and promoting safety as a key feature of destination branding has emerged as a significant factor to boost travelers' vaxication intentions [12,[51][52][53][54]. Hence, the present study's first hypothesis was formulated as follows: Hypothesis 1 (H1). CBDS has a positive effect on vaxication intention.

Moderating Effects of Travel Incentives
Promotional campaigns, incentives and discounts are acknowledged to be indicative of influencing purchase decisions and simulating sales in the short run [88,89]. Likewise, In the tourism and hospitality industry, attracting customers using incentives, discounts and promotions has also been validated as a valuable marketing strategy to ensure an increase in short-term sales [61,89,90]. Aiming at seeking effective ways to differentiate the services from others, the marketers plan and offer multiple incentives and promotions, including packages targeting hedonic and utilitarian value, and incentives based on value increase and value addition [91][92][93][94]. Suggestively boosting the brand and reinforcing the company's brand image, the 'value increase' refers to the incentives focusing on price reductions or incentives, which are designed to match the price and quality to enhance the perceived value, whereas the 'value adding' incentives refer to the offering of extra benefits (piggybacks or gifts, gaining points, freebies, etc.) which are complimentary to a standard package [94]. A study conducted on fifteen tourist destinations available in five different countries analyzed 5789 travel packages offered by various European tour operators. The holiday packages were analyzed in terms of various variables, including the incentives and promotions offered by the operators to the tourists; the research results concluded that the numbers of incentives and promotions offered by the holiday operators significantly impacted the purchasing decision and travel behavior of the tourists [95]. Similarly, the availability of information regarding holiday packages, including coupon offers and money off, is suggested to be facilitating travelers in conducting the benefit evaluation of the promotional offers and offered incentives, which results in a favorable impact on customers' holiday packages and purchase intentions [91]. Likewise, the relationship between various types of incentives in increasing traffic at tourism destinations has also been validated in the literature. A study on a Swiss ski destination revealed that reductions in the ski prices resulted in increased overnight stays at the ski destination hotels and resorts in Switzerland [96]. Hence, the present study's second hypothesis was formulated as follows: Hypothesis 2 (H2). Travel incentives positively moderate the relationship between CBDS and vaxication intention.

Moderating Effects of Travel Shaming
The introduction of travel-shaming behavior towards people who opted to travel to places and countries during the pandemic reveals a major shift in the attitude of the public. This attitude shift is a result of anti-mobility and anti-social interaction campaigns by the WHO and countries, people's understanding of the pandemic situation, and their pursuit of social desirability [14,17]. Travel shaming is a relatively new concept in the tourism literature; however, a prior popular shaming concept related to the travel and aviation industry is stated in the literature as 'flight shaming', and was advocated for its considerable impact on travel intention. Flight shaming refers to an environmental protection campaign called 'flygskam'; an anti-flying movement criticizing airlines and travelers for adversely impacting the environment [97]. The literature presents diverse views about the significance of flight shaming and its potential serious impact on the flying behaviors and air-travel desires of people; however, there is consensus on the understanding that flight shaming most certainly affects social and moral norms, enhances awareness, and interferes with the planning and evaluation process while making a travel decision [98][99][100]. A study conducted by Winter et al. [100] on 847 participants validated the theory that flight-shaming campaigns negatively impacted the willingness to travel in the future, and successfully built awareness about airlines adversely contributing to climate change; the willingness to travel for participants with high sustainability values was reported to be impacted more compared to those with lower sustainability values. Likewise, another study suggested that flight shaming might not become a mainstream factor instigating significant implications for airline business and operations; however, it certainly is responsible for instilling eco-guilt in the travelers and inducing an emotional pressure for the evaluation and rethinking of their travel choices and behavior [99].
Similarly, consumer behavior literature validates the use of negative emotions (i.e., shame, guilt, fear, and anger) as making a significant contribution to the purchase decisionmaking process. A study on the impact of negative emotions on the purchase decision based on the hierarchy effect model (HEM) suggested that shame was the strongest influencing factor at two out of the six HEM stages (the awareness stage and the conviction to purchase stage); at the awareness stage, the shame of not having the awareness about the product led to the intention to collect the useful information, whereas at the conviction to purchase stage, shame acted as a stimulus for the need to relate to, and not deviate from, the relevant social class [101]. Likewise, the concept of shame has also been attested for its use in social marketing, aiming at persuading people to alter their undesirable social behaviors towards commonly acceptable social behaviors [102,103]. A study conducted on the behaviors of smokers concluded that the use of shame appeal successfully results in a desirable altered behavior (quitting smoking) in smaller communities with supportive legislative systems [102]. Similarly, in another study, the use of negative appeals (fear, shame, and guilt) was postulated as an instrument to create an emotional imbalance, the result of which was reported to be compliance with the desired social behavior [103]. Their results showed that shame should be considered to be an outcome of guilt, and was meaningfully influential in shaping and altering consumer's behavior towards social messages; the study also suggested further research on the underdeveloped theory of shame appeal being potentially capable of significantly affecting social messages and campaigns. As was evident in prior literature, the relevant shaming concepts related to travel, aviation, tourism, Sustainability 2021, 13, 14043 9 of 23 and consumer behavior have a significant impact on travelers' psychology, intentions, and decision-making processes; it is therefore postulated that for this study, travel shaming will have a similar impact on the destination choices and vaxication decision of the travelers. Hence, the present study's third hypothesis was formulated as follows: Hypothesis 3 (H3). Travel shaming negatively moderates the relationship between CBDS and vaxication intention.

Sampling and Procedure
The present study recruited fully-vaccinated residents in Hawaii, United States for the purpose of the empirical examination of the effects of CBDS on vaxication intention, under the moderating influence of travel shaming and travel incentives. Hawaii is an international tourism hotspot due to its incredible natural beauty (e.g., world-famous white sandy beaches, volcanic activity, and tropical weather), tourism activities (e.g., water sports, especially snorkeling and scuba diving) and unique cultures (e.g., diverse-cuisine and hula dance, etc.), which attracted 10.4 million pre-pandemic visitors in 2019 (generating USD 17.75 Billion tourism revenues), and ironically welcomed 2.7 million post-pandemic visitors in 2020 [104]. A total of 885,913 residents in Hawaii (i.e., 62.57% of the total population) have already been fully-vaccinated; hence, they can freely enjoy inter-island unrestricted travel, as well as partially-restricted travel to destinations outside Hawaii [104]. In order to generate an adequate study sample of fully-vaccinated residents in Hawaii, the researchers used direct personal contacts through emails and social media platforms (e.g., Facebook and LinkedIn), as well as recruiting survey respondents through the highly-experienced OmniTrak Group. A standardized online-survey design and specific vaxication questions ensured that only fully-vaccinated residents in Hawaii were encouraged to participate in the survey, whereas the non-vaccinated or partially vaccinated residents were automatically screened out [105]. A total of 560 fully-vaccinated residents in Hawaii voluntarily agreed to participate in the online vaxication survey. A pilot study was conducted on the initial sample (N = 70) to ensure that the participants clearly understood the vaxication survey requirements and the stated questions. Importantly, the researchers carefully ensured various procedural remedies (e.g., the anonymity of respondents, the confidentiality of their responses, the lack of the respondent's awareness about the conceptualized model, and informing respondents that they were no right or wrong answers) to overcome any possible issues concerning common method bias [105,106]. None of the questionnaires were discarded, as all of the mandatory question items were completed by the participants successfully. A sample size of 560 fully-vaccinated residents in Hawaii was considered highly sufficient based on the various recommendations and the yardstick for co-variancebased structural equation modeling (CB-SEM) [105].

Data Analysis
The present study's hypotheses were empirically tested through the widely-applied covariance-based structural equation modeling (CB-SEM) technique, coupled with Mplus, i.e., a fully-integrated modeling program offering more robust SEM estimations in contrast to other competing and commonly used software (e.g., LISREL, EQS, and AMOS, etc.) [111][112][113]. The data analysis procedures involved statistical estimations in three stages, including: (1) normal distribution testing (using skewness and kurtosis values), (2) measurement model testing (using reliability and validity assessments to ensure the scale's psychometric properties, and exploratory and confirmatory factor analysis to ensure adequate factorialstructure design and model fitness), and (3) structural model testing (using a bootstrapping procedure to ascertain path-coefficients, t-statistics and p-values) [111,113].

Demographic Outcomes
During the analysis, the respondents' demographics were examined prior to the assessment of the hypothesized relationships between the latent constructs. Based on the available secondary data for Hawaii, the results reflected a slight-to-good match between the Hawaiian population and the sample adopted in the present study. According to the Hawaiian census, Hawaiians who are equal to or older than 55 years old constituted 33% of the population in 2020 [104]. Similarly, the proportion of the same age interval in this study was found to be 34.5% percent, thus illustrating a match between the sample and the overall population (Table 1 represents the sample demographics). Likewise, in the study sample, the age interval between 18 and 24 years old comprised the smallest group in the Hawaiian population based on the age intervals adopted in the present study [104]. However, the study sample was recognized to be more educated than the original Hawaiian population, where only 33% have bachelors' or higher degrees. Furthermore, the participants selfreported that they travel at least once a year and stay overnight at hotels. Given the fact that all of the participants have the habit of traveling inside (i.e., inter-island) and outside Hawaii, the sample was deemed to sufficiently reflect the Hawaii population in order to investigate the research objectives [105].

Data Normality and Harman's Single Factor (HSF) Test for Common Method Bias
In the first phase of the analysis, the research data were examined in terms of outliers, normality, missing data, and other linearity issues. In order to assure that the research data were fit for linear modeling, the data normality was assessed for each latent construct utilized in the model. Table 2 provides information about each construct's normality, wherein the standard deviation for each variable lies within the "−2 and 2" acceptance threshold. Besides this, the skewness values for each latent construct were found between the cut-off acceptance values of "−1 and +1". The kurtosis values were also within the acceptance level of "−3 and +3". Consequently, all of the latent constructs included in the study were deemed to satisfy the normality assumptions of the structural equation modeling [111][112][113]. The statistical estimations (as reported in Table 3) determined the common method bias (CMB) using the widely employed Harman's single factor test. A principal component factor (PCF) analysis was executed to identify any existent bias in the study data (N = 560). The PCF analysis (using a single-fixed factor) of all of the latent construct items reported a variance of CMB less than the recommended range of 50%. The PCF analysis clearly established that the estimated variance of 27% was within the permissible range. Hence, there are no reported CMB issues and/or concern for the present study [111,112].

Measurement Model
After establishing the normally distributed study data, exploratory factor analysis was subsequently conducted. All of the construct items reflected adequate factor loading values (i.e., greater than 0.5), which yielded four distinct constructs with Cronbach's alpha values over 0.90. After the EFA, CFA was employed to assess the extent of the fit between the theoretical model and actual observed data (graphically represented as Figure 1). The goodness of fit indexes provided adequate assurance that the data had a very good fit with the measurement model (χ 2 /df = 2.353, SRMR = 0.067, RMSEA = 0.049). Statistical estimations regarding the exploratory and confirmatory factor analyses are depicted in Table 4. Furthermore, Table 4 provides the composite reliability (CR) and average variance extracted (AVE) values of the latent constructs used in the present study. Because the AVE values were higher than the cut-off value of 0.5, and the CR values were far above the minimum acceptance value of 0.6, each construct employed in the study was also deemed to successfully achieve convergent validity [111,113].
The non-existent multicollinearity among latent constructs is considered to be necessary to ensure the accuracy of SEM results [111][112][113]. In order to ascertain the multicollinearity issues (if any), the AVE square root values were compared with the measurement error-adjusted inter-construct correlations, as illustrated in Table 5. Because the square roots of AVE (represented as bold values in Table 5) were much higher than the inter-construct correlations, the variance in all of the constructs was deemed to be explained by their reflective indicators, rather than other composite variables [114]. Consequently, all of the latent constructs in the measurement model established sufficient discriminant validities [111,113]. earity issues (if any), the AVE square root values were compared with the measurement error-adjusted inter-construct correlations, as illustrated in Table 5. Because the square roots of AVE (represented as bold values in Table 5) were much higher than the interconstruct correlations, the variance in all of the constructs was deemed to be explained by their reflective indicators, rather than other composite variables [114]. Consequently, all of the latent constructs in the measurement model established sufficient discriminant validities [111,113].

Structural Model
Having verified that all of the constructs had good levels of scale, discriminant and convergent validities, path analysis was employed to test the hypothesized relationships among the constructs [113]. The hypotheses' results included path coefficients, t-stats and p-values [111,112], as illustrated in Table 6 and graphically presented in Figure 2. The structural model assessments facilitated the addressing of the present study's main research objective (i.e., the identification of the significant predictors of vaxication intentions amidst the COVID-19 pandemic). The SEM results validated the positive effect of CBDS on vaxication intention, which was found to be statistically significant (β = 0.188; t = 2.083; p < 0.05), confirming the acceptance of H1. This implies that if a destination is promoted as offering a COVID-19-free and safe atmosphere, this will increase individuals' motivation to travel to that destination soon after getting the necessary vaccine shots. This influence (i.e., the relationship between CBDS and vaxication intention) was also found to be positively moderated by destinations' travel incentives. In particular, the presence of travel incentives augmented the relationship between CBDS and vaxication intention in a statistically significant way (β = 0.214; t = 4.755; p < 0.01), supporting the acceptance of H2. Last but not least, a significant moderating influence of travel shaming on the relationship between CBDS and vaxication intention was established. The findings suggest that the feeling of shame that arises from traveling while the pandemic is not yet saturated can negatively influence vaxication intention despite CBDS; hence, H3 was also accepted (β = −0.148; t = 3.020; p < 0.01).
In other words, despite getting vaccinated, individuals' negative emotions are likely to surpass the effect of destinations' promotional and CBDS efforts. CBDS * TS → VI −0.148 ** 0.049 −3.020 0.000 Accepted Notes: * p < 0.05; ** p < 0.01; CBDS * TI → VI represents the TI interaction term with a moderating effect on CBDS → VI; CBDS * TS → VI represents the TS interaction term with a moderating effect on CBDS → VI.

Discussion
Despite the unsettling impacts of COVID-19 on destinations, nearly shutting down global tourism, the severity has recently eased due to mass vaccination campaigns, increased public awareness, and strictly applied measures [115]. While they are preparing to host long-awaited visitors again, destinations are trying to position themselves as safe and posing little-to-no risk related to the pandemic [116,117]. The present study explored the branding influence of tourism destinations' safety [5,118] on vaxication intention [13], thus constituting a preliminary effort to investigate the relationship between recent trends in tourism [23]. Furthermore, the present study also examined the moderating influence of travel shaming and travel incentives on the relationship between COVID-19-free destination brands and vaxication intention [4,18,75]. Structural equation modeling was applied to test and validate the hypothesized relationships in a holistic model of vaxication intention. The findings revealed that when destinations are perceived as pandemic-free brands, the vaxication intention was significantly amplified. Hence, the present study provided empirical evidence to support recent studies that highlight a negative relationship between the perceived health risk of COVID-19 and tourists' revisiting intentions [119,120]. Similarly, the findings also complement recent tourism studies that have manifested perceived health risks as a major concern for travelers regarding the revisiting of their preferred destinations during the pandemic [121,122].
The present study also assessed whether travel incentives could be useful in driving tourists' attention towards destinations that were hardly hit by the pandemic. The findings unveiled that travel incentives amplify the impact of CBDS on vaxication intention, which underlines the relevance of promotional incentives in destinations' recovery efforts

Discussion
Despite the unsettling impacts of COVID-19 on destinations, nearly shutting down global tourism, the severity has recently eased due to mass vaccination campaigns, increased public awareness, and strictly applied measures [115]. While they are preparing to host long-awaited visitors again, destinations are trying to position themselves as safe and posing little-to-no risk related to the pandemic [116,117]. The present study explored the branding influence of tourism destinations' safety [5,118] on vaxication intention [13], thus constituting a preliminary effort to investigate the relationship between recent trends in tourism [23]. Furthermore, the present study also examined the moderating influence of travel shaming and travel incentives on the relationship between COVID-19-free destination brands and vaxication intention [4,18,75]. Structural equation modeling was applied to test and validate the hypothesized relationships in a holistic model of vaxication intention. The findings revealed that when destinations are perceived as pandemic-free brands, the vaxication intention was significantly amplified. Hence, the present study provided empirical evidence to support recent studies that highlight a negative relationship between the perceived health risk of COVID-19 and tourists' revisiting intentions [119,120]. Similarly, the findings also complement recent tourism studies that have manifested perceived health risks as a major concern for travelers regarding the revisiting of their preferred destinations during the pandemic [121,122].
The present study also assessed whether travel incentives could be useful in driving tourists' attention towards destinations that were hardly hit by the pandemic. The findings unveiled that travel incentives amplify the impact of CBDS on vaxication intention, which underlines the relevance of promotional incentives in destinations' recovery efforts [108]. Thus, this study affirms the extant literature that has highlighted the vital role of tourism promotions to enhance the image of a destination despite some initial negative perceptions [61]. In particular, as suggested by Novelli et al. [49], the present study confirmed that travel incentives (e.g., discounted hotel rates or subsidized flights) could be an effective medium to generate tourist demand, while public health risk is elevated during the global health and tourism crisis [16,61].
Last but not least, the present study also examined the moderating role of travel shaming, wherein the positive impact of CBDS on vaxication intention was significantly altered, with an increasing fear of travel shaming [4]. This finding aligns with the recent movement of "flight shaming", which shows that increasing awareness about the environmental effects of flying can hinder peoples' motivation to travel abroad [97,99]. Likewise, traveling during the pandemic is considered dangerous by many, especially considering the high risk to public health due to the more contagious COVID-19 'delta and omicron' variants. Such emerging risks propelled by new variants of COVID-19 have given rise to emotions of shame for someone who travels irresponsibly [14,121]. Consequently, fully-vaccinated travelers may still worry about others' judgment, which can undermine their willingness to travel, even if the destination claims to be COVID-19 free [16].

Theoretical Implications
The present study expands the existent tourism literature and makes significant theoretical contributions by offering the first empirical evidence on post-vaccination travel intention (i.e., vaxication), which is an emerging global tourism phenomenon, though it is rarely examined [3,6,13,16,23,73]. The present study also fills the critical knowledge gap on the travel intentions of fully-vaccinated travelers, especially during the times of the COVID-19 pandemic crisis with its emerging new and highly contagious variants (i.e., delta and omicron) [3,4,12,[21][22][23]73]. Because the ongoing pandemic has nearly placed global tourism at a standstill, it has urged many destinations to develop cutting-edge strategies to regain tourists' confidence and revive inbound tourism [1,9,12]. The present study advances the tourism literature with a novel theoretical framework and sheds light on tourists' cognitive evaluation of destinations that are deemed to be under crisis [13,23]. Importantly, the present study introduces the theory of planned behavior and protection motivation theory to tourism literature by presenting a novel model that conceptualizes the most recent trends and challenges in global tourism (i.e., CBDS, travel shaming, redesigned travel incentives and vaxication) [4,119,122,123]. Drawing upon the protection motivation theory, the study findings suggest that those destinations promoting themselves as COVID-19 free can positively attract more visitors [16]. Furthermore, this study empirically verified the moderating role of travel shaming, contributing to the scholarly understanding of emotions in tourism behavior [4,124]. The concept of shame was investigated in only a few tourism studies, which have suggested that social pressure may sometimes force travelers to refrain from using flights, favoring environmentally friendly transportation alternatives [97,99]. However, these studies concentrated narrowly on flight shaming while overlooking whether the feeling of shame can broadly apply to different aspects of traveling, especially during a time of crisis [4,14]. To that end, this study, for the first time, empirically assessed travel shaming in connection with vaxication intention, extending scholarly knowledge about the underlying role of shame in post-pandemic travel behavior [124]. Last but not least, the present study tested the practicability of travel incentives in increasing the tourist influx to hardly hit tourism destinations during the global pandemic. Although prior literature has highlighted that sales promotions and discounts can increase the demand for tourism [61,125,126], no study has yet analyzed the role of tourism incentives in encouraging travel behavior during an ongoing tourism crisis [18]. Therefore, this study makes a novel contribution to the literature by highlighting the fact that tourism incentives can augment peoples' intentions to travel after being fully vaccinated [13,108].

Managerial Implications
Based on the study findings, the present study offers valuable insights to destination management organizations struggling to survive the COVID-19 pandemic. First, the present study provided empirical evidence that promoting destinations as pandemic-free can augment post-pandemic travelers' intentions to visit those destinations. Therefore, it is recommended that destination management organizations underline their capability of offering safe and healthy vacations in their marketing campaigns [127]. One good example of this strategy is employed by the renowned Italian island of Capri, which promotes itself as a COVID-19-free destination, along with highlighting the island's natural trails as an enabler for isolated tourism [128]. Furthermore, this study unveils those incentives employed during a tourism crisis that can facilitate demand and foster tourism recovery. Destinations are advised to filter out the most appropriate incentives and customize offers based on targeted tourists' profiles. For example, incentives such as subsidized flights, booking cancellation without charge, visa waivers, and personalized promotions targeting small niches, etc., can lure some international tourists away from competing destination brands [65,86]. Nevertheless, these policies should be coherently coordinated as part of destinations' long-term recovery plans, as tourism services are inherently interdependent [129]. Destinations should also pay more attention to tourists' emotions and the factors affecting travel motivations in their tourism recovery efforts and plans. Since the beginning of the outbreak, uncertainties and echoed health risks have damaged peoples' emotional wellbeing, causing distress to the larger society. Hence, destinations are advised to incorporate the significant shifts in travelers' emotional conditions (e.g., travel shaming) and concerns while designing post-pandemic marketing interventions. For example, if traveling continues to be considered risky and socially inappropriate, it is suggested that destinations develop emotional appeals to positively reframe COVID-19 and increase the public approval of post-vaccination travel [23,130].
Importantly, post-arrival quarantine policies (as a significant indicator of destination safety) can have a varying degree of impact on the travelers, residents and tourism planners [1,3,16,20,24]. Hence, branding destinations for COVID-19 safety should be prioritized from the multi-stakeholder perspective, i.e., tourists, residents, and tourism planners, as well as fully-vaccinated, non-vaccinated and partially-vaccinated individuals [1,3,23]. Recently, there has been a growing number of tourism destinations (e.g., Spain, Portugal, and Malta) that have allowed quarantine exemptions for fully-vaccinated travelers, whereas non-vaccinated and/or partially-vaccinated travelers still have to undergo the mandatory quarantine period (usually 14 days) on arrival [2,20]. Moreover, fully-vaccinated travelers can skip quarantine when returning from non-red-list countries (e.g., New Zealand, Singapore, and Switzerland). Hence, depending on the visitor's COVID-19 vaccination status, quarantine policies can be leveraged to prioritize destination safety, and can use CBDS to attract fully-vaccinated travelers with vaxication intentions [1,3,11,23,24].

Limitations and Future Research
Although this study focused on the most recent global tourism trends (i.e., CBDS, vaxication, and travel shaming), some limitations need to be mentioned. First, this study collected data from Hawaii, the only island state in the United States with a unique native culture. Hawaii is already a famous tourism hotspot, providing its residents with various entertainment and relaxation options within the island [131]. Therefore, the Hawaiians' vaxication tendencies to pandemic-free destinations may not truly represent international tourism behavior [132,133]. In order to address this issue, future studies could concentrate on countries with diverse economic, social and geographical circumstances to extend the generalizability of the present study findings. Furthermore, as the present study sheds light on recent developments in tourism, for the sake of simplicity, it utilized one of the frequently used theories in tourism, namely the theory of planned behavior and protection motivation theory. Future studies could also draw findings based on additional wellaccepted theories of consumer behavior. For example, the impact of tourism incentives and travel shaming on vaxication intention could be further assessed based on the heuristic systematic model and cognitive response theories [105], which can contribute to the scholarly understanding of post-pandemic tourist behavior. Therefore, it is also advised that future studies take advantage of persuasive theories of emotion and communication in order to better understand and take advantage of travelers' changing intentions through and beyond the COVID-19 pandemic [122].

Conclusions
With the reopening of international borders and relatively relaxed measures for global travel, destinations worldwide are devising strategies to offset the devastating effects of the pandemic [2]. In order to address this contentious issue, the present study empirically highlighted that promoting destinations as pandemic-free can trigger future tourism demand, especially for those who have already received their vaccination shots. The pandemic has distressed many nations with extremely challenging economic, social and cultural conditions, leaving too many people emotionally damaged [134][135][136]. Once acknowledged as a social currency, global travel now incites feelings of shame for those who still want to travel during the pandemic [23]. Hence, it is recommended that destination management organizations develop effective mechanisms to track changes and empathize with future travelers' emotions. In particular, destinations can positively frame COVID-19 travel behavior and launch promotional campaigns to enhance the public approval of traveling in the post-pandemic era, especially for fully-vaccinated visitors [130]. Importantly, destination marketers should reconfigure tourism products with realigned travel incentives for vaccinated travelers, as well as re-establishing their destination brand for COVID-19 safety [1]. Lastly, tailored incentives (e.g., Mexico's "Come to Cancun 2X1" campaign) can encourage vaxication as an initiative to revive the global tourism industry to its pre-pandemic level [2,13].  Informed Consent Statement: Informed consent was initially obtained from all participants who had volunteered to participate in this study.

Data Availability Statement:
The study data is available on special request from the corresponding author.