Hello I have a 30 day tourist visa on the arrival date of 01/12/2019. Can I get another 30 day extension if I go to an immigration office in the next couple of day. My flight out is booked for the 30/01/2020. Will immigration give me the extension for 30 days from the 30/12/2019, or will it be from the date I go in a couple of days. I hope this makes sense.
Thanks in advance
TLDR : Answer Summary
You can apply for a 30-day extension of your tourist visa at an immigration office before your original visa expires. The extension will be added to your current visa stamp, giving you a total of 60 days in Thailand. It's advisable not to wait until the last day to apply for the extension.