Sorry, I can help any further then! But explain to hubby that you might just be unlucky, jump the wrong way and end up sitting watching the pouring rain every single day on Phuket and Samui if you book everything in advance.
You can book hotels online in Thailand too you know...though there is a slight risk of credit card fraud on public computers. Local agents can also get you good deals however and you can pay them in cash.
As I said, October is low season.