Definitely agree with the elephants, Phi Phi and Patong Beach. The only thing I didnt like about snorkelling on Phi Phi was getting bitten by the sea lice... UrGh. Stunning place though, but I wouldn't stay on the island overnight, its small and not much to do. The boat ride was loads of fun, my work sent a group of us to Bangkok and Phuket, so we had a blast edging each other on lol. Oh and be careful of the alcohol there, they are very generous with the alcohol content and they have some potent local stuff!!!!

I'll try and scan my photos so I can post them for you.