The favourite festivals in Thailand; the lotus throwing (Rap Bua) festival in Bang Phli, Samut Prakan which countless thousands of local public line the banks of Samrong Canal to throw lotus flowers onto the boat carrying a replica of the famous Buddha image; Luang Poh To was monitoring and evaluated on public’s perceptions of their participants for obvious reasons at Wat Bang Phli Yai Nai toward their participated activities. Associations between public’s activities and their satisfied of this festival were assessed. Using the qualitative data with interview, observation, and participated memberships’ activities were designed from the 10-item Questionnaire on Satisfaction Inventory (QSI) was validated of 0.88 which sample size consisted of 2,383 persons. Statistically significant of their different gender also were found. Public’s participating this festival to their satisfactions were differentiated, the efficiency predictive value ( R 2 ) value indicate that 58% of the variance in their satisfaction assessments also were associated. Article visualizations: