Many hospitality consumption experiences are shared with fellow consumers such as acquaintances, friends, or family members. Yet research examining the impact of fellow consumers' presence on consumers' donation behaviors is scant. To bridge that gap, the current research examines how the presence of fellow consumers influences consumers' donation behaviors in a restaurant setting. Results from our experiment reveal that the impact of fellow consumers' presence depends on two factors: observability of the donation and donation appeal type. Specifically, we found that when the act of donating is unobservable by others and the donation appeal highlights self-benefits, the presence of fellow consumers drives individuals to exhibit more favorable attitude and higher levels of donation intention. Conversely, when the act of donation is observable by others and the donation appeal portrays other benefits, the presence of fellow consumers makes individuals to exhibit less favorable attitude and lower levels of donation intention. Furthermore, our mediation analyses show that anticipated emotional benefits is the underlying psychological mechanism explaining the effects. We discuss the theoretical contributions and managerial implications of our findings as well as limitations and opportunities for future research.