Of course you can move here and get a non O marriage visa via the Thai embassy in your country first. Or come here on TR and get non O here. Lots of paperwork. You have to renew visa once a year in thailand plus 90 day reports .. and keep £10k in a Thai Bank account.
I'm reluctant to do visa exempt as a few years ago I had a similar thing happen - immigration stopped me and said I shd have applied at embassy. I was v lucky to get back in