@Garrett **********
Several agents have informed me that starting in 2023 they are cracking down and ALL documentation must be present and 100% complete.
That means an updated bank book, 2 months of bank records printed out the day you go to immigration, signed by the bank. It must have 800k baht that has been in that bank for 60 or more days. If you are renewing a retiree visa you need 1 year of bank records and your balance must never go below 400k THB. Also a copy of your TM-30. An active lease agreement. You must not be delinquent on your 90-day reporting. Your fully filled out visa application. I think that's everything.
I have been informed by several agents that without all of these things, you will not get your retiree visa.
Of course it's always up to the IO you interview with. And maybe some agents can still get it done under the table for you with missing documentation. But from what I'm hearing, you might not have much luck getting that done.