So my question is hopefully fairly simple. I came here July 29 on Visa exempt, which gave me 45 day stamp upon arrival which expires Sept 11. In order to get COE I had to purchase return flight, as I’m sure y’all know. Typically I would go about 3 days before stamp expires to get extension but my return flight is Sept 8. Should I go to immigration before the 8 since that is date of my return flight or should I go sooner? Thanks
TLDR : Answer Summary
The original poster arrived in Thailand on a visa exemption that allows a 45-day stay, expiring on September 11. The return flight is scheduled for September 8. Community responses indicate that there's no need to visit the immigration office if leaving before the visa expired, as they will be stamped out at the airport. However, if the OP wishes to extend their stay, they should go to immigration before the expiration date, typically when 30 days are left on the stamp.