Extension of stay for visa on arrival. What is the soonest after arrival in Thailand that one can apply for a 30-day extension of stay when entering Thailnd on a 30-day visa-on-arrival? Applying at Chiang Mai Immigration Office. Thank you.
TLDR : Answer Summary
When entering Thailand on a 30-day visa on arrival, you can apply for a 30-day extension of stay as soon as you arrive. You would need to visit the Chiang Mai Immigration Office to submit your extension application. Make sure to check for any specific requirements or documentation needed for the extension process.