We are going to Krabi next week and are still not sure what to do about money. If anybody can help on the following questions then it would be great help:-

1) Are ATM's easily accessible in Krabi & if so if are they trustworthy and reliable?
2) If we take sterling with us is it easy enough to find places to change it up in to Baht?
3) Is the rate difference you get over there much different to here? Will it make a huge difference to the amount of Baht we get?

Thanks for your help with this!