Abstract The purpose of this study is to explore the influence of two types of perceived crowding (spatial crowding and human crowding) on festival experience as well as how the interactions among visitors moderate the relationship by introducing the variable ‘visitor-to-visitor interaction’. To this end, taking Chinese local cultural festivals as the research object, empirical tests with regression analysis are conducted on 555 questionnaires concerning people's festival experience and perception of spatial crowding and human crowding. The results reveal an inverted U-shaped relationship between perceived human crowding and festival experience, whereas perceived spatial crowding consistently negatively affects the festival experience. Furthermore, the moderating effect of interactions among visitors is confirmed: the quality of interaction has different moderating effects on the relationship between different types of crowding perception and festival experience, and the quantity of interaction positively moderates the relationship between perceived spatial crowding and festival experience.