Ark Bar Resort is a great place for parties and night life. It's a popular spot to enjoy the island's lively atmosphere, especially if you're 22 like you mentioned. You can find it on the beach, and it's a great place to try some Muay Thai.
3 recommendations in Nightlife
Recommendations in Koh Samui
Beach dining with live music and fire show at Choengmon Beach. Located on the beach, this spot offers a unique and romantic dining experience with live music and a fire show.
It's a nice spot but horribly overpriced. There are so many other fire shows on the island that won’t cost you a kidney. You can always eat at the restaurant next door, sit at a table on the beach there & enjoy the fire show without paying as much.