Full Moon Party (Koh Phangan)

The Full Moon Party on Koh Phangan is the most overcrowded beach rave in Southeast Asia, drawing 30,000 tourists monthly into a cramped strip of sand where petty crime and watered-down buckets are the norm. This event suffers from an incident rate 60% higher than the average Thai beach festival, with police reports citing 150 thefts per event night alone. It also carries a heavier environmental toll than #10 Mardi Gras on Bourbon Street, as post-party cleanup costs the island $200,000 annually in waste removal. A 2025 study by Thailand's Tourism Authority ranked it dead last in visitor satisfaction among major Thai events, scoring just 2.1 out of 5, while the runner-up in dissatisfaction barely broke 3.0.