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Best answer
10
Chaweng hotel Raja Lipa Noi west pier closer — bigger ferry calmer choppy seas. Seatran Nathon more hourly departures high season either fine shared taxi pier 300–500 Grab Chaweng 400. Get Donsak 30 min early pier confusing first time signs. Joint ticket airport city same both operators. First Samui no wrong choice stability vs frequency.
4
Seatran joint ticket — Nathon, Grab to Chaweng 400 baht. No drama.