Hiya! I've got a single entry tourist visa, valid for sixty days, and I wanted to extend this for another thirty. Question is, does my original tourist visa have to be close to expiring before I can get the other thirty days, or can I just add them on to the sixty as soon as I get into bangkok, to give me a full ninety days out there? I'm wanting to be doing island hopping and it would be such a nuisance to have to do a visa run or to hurry back to bangkok half way through my trip to extend my visa! Cheers for any advice.
Extension starts from when it is issued (as far as I'm aware) so you'll need to get it done at the end of your visa. No need to go to Bangkok -- depending on the island you're on, other, closer immigration offices should be able to assist.