Pls don't listen to that poster, its full of poison. Why can't people travel alone?
allan, Krabi is in high season now and things can be 50% more exp compared to low season. As it is the xmas and new year week you are going, you need to book your hotel fast and research on what you are going to do. But then, I highly encourage you not to go krabi, 2days+ is too short to do anything much.
Like what I suggested you in the other thread, go batam or malaysia (genting/KL) would be better.