Regarding extension of the 45 day passport stamp on arrival for USA citizens:
When applying at IT Square, Lak Si for the one-time, 30 day extension of stay, is the TM30 form 100% required?
Any comments regarding this would be appreciated.
TLDR : Answer Summary
When applying for a 30-day extension of stay at IT Square, Lak Si, USA citizens may not always need the TM30 form. Some reports from recent visitors indicate that although many Thai Immigration offices ask for it, some locations may not enforce this requirement strictly, especially in Bangkok. It's recommended to carry proof of the TM30 filing, as it might be requested based on individual circumstances.