Can I obtain a retirement visa in Thailand if my bank funds have only been in my account for 5 weeks?

Just stop scamming the government.

No. Because there is no requirement to be currently enrolled when entering Thailand after your original course has ended. Nobody denied entry on Workcation either.

No, as it is not a legitimate reason to deny you entry. If the IO wants to deny you entry, they usually use the 'insufficient funds' excuse. The Deputy Director General of the Ministry of Foreign Affairs says you only need to produce your DTV when you re-enter. There is no official requirement to prove you attended the course or to book another. What I think happens is people with a checkered history of staying long-term in Thailand are challenged by immigration when they enter Thailand, and the IO looks for an excuse to deny them entry.

No.

The only credible report was 2 guys denied at start of year but they had never ever attended the gym. The gym was called and did not know them. Something must have triggered the call to the gym as it is not standard practice.

Agent made me perform spinning back kicks and elbows till I could get in

Not yet .

No.

Been through BKK immigration three times not asked a single question. Discover Thai nature program, always have a packet of papers ready. Just send me straight through. I hear Chiang Mai airport different story.