Purpose: This study explores food delivery app users and technology acceptance model as a theoretical underpinning. This study thus investigated the determinants of usefulness, ease of use and intention to use for food delivery app service.Design/methodology/approach: The variables of delivery time, diverse menu, quarantine, review quality and ease of use are employed as determinants of usefulness. The antecedents of ease of use are easy registration and easy payment. This study also examined the association between ease of use, usefulness and intention to use. This study collected data using Amazon Mechanical Turk, and the number of valid observations for statistical analysis was 484. A structural equation model was used to test the hypotheses.Findings: Regarding the results, usefulness was positively affected by delivery time, quarantine, review quality and ease of use. Additionally, ease of use was positively impacted by easy registration and easy payment. Finally, this study showed that ease of use positively affects both usefulness and intention to use, and usefulness is positively associated with intention to use.Originality/value: This study contributes to the literature by ensuring the explanatory power of technology acceptance model for food delivery app.

The COVID-19 pandemic caused unprecedented global disruptions, with the hotel and aviation industries—two critical pillars of tourism—among the hardest hit. This study analyzed 451 hotel-related and 336 aviation-related records from the Web of Science database, applying semantic network analysis to uncover eight clusters of crisis management knowledge: basic functions, crisis response, operational strategies, epidemic prevention and control, crisis perception, innovative services, scope of influence, and internal and external environments. Latent Dirichlet Allocation (LDA) topic modeling identified distinct thematic strategies for each sector. In hotels, these included Digital Innovation Transformation, Monitoring Management Procedures, Emotional Awareness Incentives, and Resilience Mechanism Establishment. In aviation, strategies focused on Green Economic Transformation, Co-creation Value Realization, Passenger Incentive Mechanisms, and Balancing Health Risks. By visualizing co-occurrence relationships and mapping thematic intersections and divergences, this study provides actionable insights into the recovery strategies of these industries. The findings offer robust support for developing targeted management approaches and decision-making frameworks to ensure the sustainable growth of the tourism sector.

This study investigates intergenerational relationships between young tour guides and senior tourists in group tourism, an area that has received limited scholarly attention. Using a mixed-methods, dual-perspective, cross-sectional design, it examines the influence of intergenerational relationships and intergroup contact on service performance. The qualitative phase, with 43 participants, identified connections between role perceptions, intergenerational relationships, and service outcomes, while sentiment analysis showed that positive emotions outweighed negative ones in both groups. The quantitative phase, drawing on 514 participants, revealed that role perception enhanced intergenerational solidarity, which improved service willingness and quality. Senior tourists’ perceptions were negatively linked to intergenerational conflict, whereas young tour guides’ perceptions showed no significant association. These results highlight that constructive intergroup contact fosters solidarity and that service training, health contingency planning, and cross-generational communication practices can enhance harmony and service delivery in group tourism, offering clear guidance for organizations serving aging travel markets.