1. Tourism and Hospitality Management Division, Mahidol University International College, Salaya, Nakhon Pathom, Thailand
2. School of Hotel and Tourism Management, the Hong Kong Polytechnic University, Tsim Sha Tsui, Hong Kong
3. School of Humanities and Tourism Management, Bangkok University, Klong Luang, Thailand
4. Faculty of Sports Science, Chulalongkorn University, Bangkok, Thailand