Since they told me that all the documents that I had handed in when I applied for the yearly extension check out I think a Non-O shouldn't be much of a problem. I am thinking about going to Vietnam or Turkey and applying there.
Thanks a lot. There's a lot of information out there and it's quite overwhelming. So if I understand correctly last year I switched to an in-country non-immigrant ED-visa from a Thai language school and I couldn't get another ED-visa, for instance for learning Muay Thai, or a volunteer visa without leaving the country, and a Covid extension is not an option. However I should meet the requirements for a marriage extension, I already looked at a list posted here, my wife will have to show them a lot of documents like where she's employed etc., some we still need to obtain. We will go to CW next week, see what we can find out.
I arrived on a TR visa, extended it once at Mueang Thong Thani, then switched to an ED visa. I have one more extension left in a few weeks, but I like to plan ahead for the time when that extension expires.