I married a Thai woman from near Rattanaburi, Surin in the summer of 2019. I'm a US citizen, retired.
I obtained a O-A (non-immigrant) one year visa in January 2018 because it seemed the best option as we plan to be in Thailand every year to visit family for 3-4 months.
The water has gotten muddy now with this annoying health insurance requirement for retirement visa holders. I've priced this, and it appears it will cost anywhere from 60,000 THB a year now, going up to 90,000 and then 120,000 as I get older. (I'm 70 now, headed to 100 😉)
This is totally useless, as I have and use full health insurance in the USA. I wish they'd just allow us to use the 400,000 we must keep on deposit in Thailand as security!
As a result, I'm looking for alternatives. I have read that there is a not well advertised 'marriage visa' available. I have proof of our marriage in the US with me, but I don't know if that is adequate. We are building a house in Surin now.
I'd appreciate responses from anyone with direct (not speculative) knowledge about how the marriage visa works. I gather it has to be renewed yearly. I wish Thailand would give us solvent farang husbands a break with a 5 to 10 year visa, so we cqn come and spend money here more easily.