I have a Non Immigrant O which I need to get a few days extension on. I have until 28th but I want to know what the proceedure is down at immigration to get a few days extension? How long can you extend it for and how much, what do you need to take with you and where in immigration do you go to? Thanks in advance all!

Umm, can you tell us more, like what country you are from, why was the NON-O granted in the first place, do you have a W/P etc etc

You need to fill out a TM.7 form (can be downloaded) and have a 4x6cm current photo to attach to it. Believe you also have to have copies of your passport photo/info page, visa and TM.6 arrival card. You go into the immigration entrance door and obtain a queue number which will have the desk to go to on it.

If it's just a regular extension, they generally give you 14 days plus another 7 days. Well at least from my own experience. All of course for the special price of 1900 baht.