A significant issue here is that external embassies/consulates no longer issue the non-imm b multi’s to anyone unless they hold shares in a company. A real problem for some teachers, diving instructors and employees in general.
Ha, I read an article about a guy trying to do this for five years, he was called before officials several times, had to sing the national anthem in Thai on more than one occasion amongst other crazy things that normal people wouldn’t bother with. He Had to jump through multiple, repetitive hoops (sounded like they wanted him to give up) The guy eventually got there with handful of others for that year. There’s an article on it somewhere in Thai visa.
I don’t think you will have a problem as you made all the right noises. Your retired so you have a regular income, you come, you spend, you go home. enjoy your retirement. 😉