I just arrived with a 30 day tourist stamp (USA passport ). I plan to buy a 30 day extension from immigration in Chiang Mai.
At the end of the extension can I make the border run to Myanmar and get another 30 day tourist stamp?
Thanks.
TLDR : Answer Summary
A traveler with a 30-day tourist stamp in Thailand can extend their stay by purchasing a 30-day extension from local immigration services. After the extension period, they can perform a border run to Myanmar to obtain another 30-day tourist stamp, as each Visa Exempt Entry can be extended once. Travelers are allowed to make two border runs per calendar year to acquire new Visa Exempt entries.