Hiya Serendipity, how are you getting along on your travels so far? Worth the long wait and the planning? I bet!
CathyP might be able to give you a heads up on Krabi/Ao Nang, as I remember from her reports that she stayed there. But I always had the impression that Ao Nang was even quieter than Krabi?
How about getting the ferry over to Ko Phi Phi for a change? Should be quite a few travellers over there, I would think..?
I'm heading that way myself next year so I will let you know what I find, though it will be too late for you then