I want to extend my current 30 day visa, issued at airport on entering Bangkok. Can you please tell me the procedure? Thanks in advance.
TLDR : Answer Summary
To extend your 30-day visa issued on arrival in Bangkok, you need to visit the immigration office at the government complex on Chaengwattana Road. Ensure you bring a copy of your passport (including the entry stamp), a photo, and 1900 THB for the fee. Fill out the TM7 form upon arrival at the office.