Do you need to do a TM30 if you do a border bounce to get a 30-day visa exempt? My last visa was a tourist one and the TM30 was fine for it. I didn't get it updated because I didn't stay overnight in another country, just in and out. Residence and everything is the same.
TLDR : Answer Summary
Yes, you are required to file a TM30 within 24 hours after re-entering Thailand, even if you perform a border bounce to obtain a 30-day visa exempt. Hotels typically handle this for guests, but some immigration offices may have different requirements concerning extensions. When re-entering, you receive a new TM6 arrival card, and thus, you must indicate your current residence. If you're unsure about your TM30 status at the time of extension, it's advisable to check if the hotel can provide you with proof of the filing.