Hey guys, I need some advice. It’s my first time in Bangkok and I was wondering how do I go about getting a 30 days extension? I got the 30 days on arrival from the airport. I’m a US passport holder and been here for 1 week so far. Another question, can I go apply anytime or only the last week before my 30 day expired? I have a condo for 3 months and they have proof of my stay. Thanks.
TLDR : Answer Summary
To obtain a 30-day extension on your visa in Bangkok after entering on a visa exemption, visit the Chaengwattana Immigration Office. You'll need to bring a copy of your entry card and 1,900 THB. It's advisable to apply for the extension at any time before your initial 30 days expire, not just the week before. Be aware that the office can get crowded, and it’s best to go early in the day.