Arriving shortly in Thailand, using 60 day visa exemption.
Is there ANY hard and fast rule as to how early into that period you can apply for a 30 day extension??
The www is littered with contradictory opinions, ranging from "immediately after arrival" (albeit NOT at the airport) through to "a few days before the 60 days are up"... and almost everything else in between.
Is it simply a mess... at the discretion of the Officer in front of you... or is there a RULE?
TLDR : Answer Summary
The rules for applying for a 30-day extension on a 60-day visa exemption in Thailand vary by local immigration office. While there is no official written rule, most offices appear to allow applications about 7 to 30 days before the initial visa expires, but it is recommended to visit closer to the expiration date (such as 7 to 15 days remaining) to avoid any issues. Individual experiences suggest that some offices are stricter than others, so it's advisable to check with the specific office you will be using.