Hello! I am planning on being in Krabi for NYE as well...It my first time to Thailand so I'm not in any position to give advice. But I'm also looking for something not quite as crazy as Phuket, and I heard Ao Nang is a nice alternative so I'm thinking of heading there. I'll be traveling solo and would love to meet up if you will be in the area! If you are interested, send me a pm.