@Pablo *****************
If it's the first extension they'll only give you 30 days in most offices from what I've seen. After that extra 30 days you'll be eligible for the 60 days. In some offices, where the tourists haven't been in masses, they'll give you the 60 days straight away - for example, in Phatthalung, which is a MUCH better deal. It's the same price for both btw!