The MICE (meetings, incentives, conferences, and exhibitions) industry consists of various stakeholders and their collaboration is essential in achieving the success of the entities involved. Yet, limited attention has been paid in the literature to examining cooperation among them. Thus, this research intends to understand the impact of social capital on supply chain integration in the MICE industry and the influence of supply chain integration on corporate performance and MICE destination competitiveness. Based on purposive sampling to recruit respondents working in the MICE industry in Busan, Korea, surveys were distributed online and offline. A total of 158 valid samples were utilized for data analysis, in which partial least squares (PLS)-SEM was conducted. According to the results of this study, relational and cognitive social capital affects supply chain integration and enhanced supply chain integration leads to higher corporate performance and destination competitiveness. The findings unearth novel understanding regarding the importance and function of collaboration among stakeholders in the MICE industry, from the perspective of social capital and supply chain integration, that offers valuable theoretical and practical implications.