Converting 30 Day Visa Exempt to Non-O Based On Retirement

Good info, a bit more clarification pls:

So, you can season during the 90 days of the extension which you get at conversion, if I understand you.

For the conversion, do you still have to show the 800k is in a Thai Bank already (even if not yet for 60 days) and show proof from the Thai bank that it came from abroad,.... is that correct?

Thx from a 49 and 3/4 year old

You will get a 90 day entry from the non immigrant visa you apply for in the first step.

Then you apply for a one year extension that will begin at the end of those 90 days giving a total stay of about 15 months from the date you apply for the visa.