Ok. So ... If I understand correctly, there is no point to do the 90 day reporting for someone on a DTV that plans to exit Thailand within the 180 days they get per arrival. Assuming you have no other reason to visit immigration office while in country.
Have you guys done it? Because I was told by customs that you need to stay out for 1 day. Like you can't re-enter on the same calendar day as you leave
I was told by the Samut Prakan immigration office that a new TM30 needs to be filed every time you re-enter Thailand if you are not on the same visa as when you left (even if you still reside at the same address). So for example, if you rent a condo for 1 year but you are doing visa-exemption runs, then each time you return you will need a new TM30 completed by owner that shows starting date on/after latest visa-exemption stamp. However, if you re-enter on the same visa, like you would if you have DTV, then you can use your old TM30 as long as the duration of stay is still valid.
I can confirm LA embassy only requires most recent bank statement for 500k requirement (checking or savings), not sure about investment account since I used checking to get approved back in July 2024.