Racha Yai & Coral Islands (8 hrs)

So you've got a crew of 100 people and one shot to make them actually like each other. Board the Yona, a 75-foot large group boat that knows these waters like locals know their coffee order. This vessel handles the Phuket crowd circuit without the chaos you'd get on smaller boats—there's actually room to breathe, which counts for something in Thailand.

Head straight to Koh Racha Yai (Koh Raya Yai) and its satellite coral islands. The hardest choice here is which snorkel spot to hit first—spoiler: both are epic. Crystal water, fish that haven't learned to be camera-shy, and reefs that'll remind you why you didn't just book a pool day back home.

November through February? Perfect. Cool season means comfortable sun exposure without the melt-into-your-seat vibe. Even monsoon months work well in these waters—those tropical showers are brief, warm, and honestly pretty cool for Thailand authenticity. Your group gets refreshed every few hours instead of broiled.

Fair warning: remote Thai islands keep things simple on facilities, so pack what you need. Waterproof bags for phones are non-negotiable when you're dealing with enthusiastic snorkelers. The Yona handles 100 guests smoothly, though don't expect privacy—that's the trade-off for this kind of group adventure.

Your shortcut to island-hopping bliss, minus the logistical nightmare.