I want to apply for 30 day extension to my visa exemption (60 days).
I'll visit Jomtien immigration office. Apart from my passport and 1900 baht what else is needed?
Can I go a week or two after arrival in Thailand to be sure about extension for planning flight out at later date?
TLDR : Answer Summary
To apply for a 30-day extension of your visa exemption at the Jomtien immigration office, you will need your passport, 1900 baht, a TM.30 receipt, a photo, a copy of the ID page of your passport, and your latest entry stamp. It is important to note that you must apply within a week of the end of your current visa validity; attempting to apply earlier will likely result in being turned away.