Can you do TM30 right away at Suvarnaphumi Airport when you arrive at midnight if you have all documents ready (copies of homeowner’s House Registration, ID card, and form)?
Note: This American man visits Thailand for 3 months on a yearly basis and stays at the same house for almost a decade now.
TLDR : Answer Summary
The TM30 cannot be filed in person at Suvarnabhumi Airport; it must be done at a local immigration office unless using the online system or app. If the visitor has a TM30 already registered for their residence, they may not need to file a new one upon each entry as long as they return to the same location, but specific local rules may vary.