Start easy with a hotel breakfast to recover from travel and brief the group on the plan; many hotels serve from 6:30–10:30 AM. Good fuel for a full day of sightseeing.
See the giant reclining Buddha and book a reputable massage at the temple school; Wat Pho is open ~8:00–18:30 and massages are a relaxing cultural experience.
Start the bachelor-party energy with backpacker-style bars, street drink stalls and live music; bars operate late into the night — perfect for a lively first night.
Try Bangkok's legendary Pad Thai; the restaurant is popular and open roughly 16:00–02:00 for their famous charcoal-cooked plates, but daytime branches/alternatives serve earlier.
Tour the historic teak house and silk museum to learn about Thai silk history; tours run throughout the day (approx 9:00–18:00), book the guided tour if possible.
Finish the night with spectacular city views from a famous rooftop bar; most rooftop bars operate until midnight–2:00, check dress code and reservation policies.
Party at one of Samui's busiest clubs with DJs and dancing; club nights usually run until 2:00–4:00 AM depending on the night — check the club calendar.
Reserve the afternoon for sunbathing, swimming and pre-party relaxation on the Full Moon Party beach; public access is free but prepare for crowds later.
Iconic all-night beach party with DJs, fire shows and neon paint — entrance often 22:00–02:00 onwards, runs until dawn; check event date (full-moon schedule) and safety tips.
Return transfer to Samui airport and fly to Chiang Mai (may connect through Bangkok). Flights vary — check current schedules; total travel time often 3–5 hours including transfers.
Half-day visit to a reputable elephant rescue where you can learn about and support ethical elephant care; book ahead — the park's program typically runs morning sessions ~8:30–12:30.
Riverside dining with a wide menu and live music options — a relaxed spot to celebrate the groom with riverside views in the evening (open 17:00–23:00).
Morning tour to the historic Cu Chi Tunnels to learn about guerrilla life — tours depart early (approx 7:00–8:30) and return by early afternoon; wear comfortable shoes.
Casual lunch sampling street food and quick bites while doing last-minute souvenir shopping; stalls open daily with peak hours at lunchtime and evening.
Quick cultural photo stops in the city center to soak in colonial architecture and pick up any last-minute gifts; monuments are public spaces open during daylight hours.