Thats very expensive for a DTV someone on early post said he paid
*****
for a muay thai course and then applied. Retirement should be 1900 baht a year if you have everything, if you going through agent and dont have funds its more than 8 to 12 k a year
Multi entry tourist visa is 6 months 60 days at a time although correct timing can get nearly 9 months out of it.
Dont think there are multi entry O visas now available unfortunately. There is the OA visa which is valid for a year bit has insurance and stuff like that.
OA entry can be for whole year or as long as your insurance is valid i have known people get nearly 2 years with this visa
If so need to go british embassy to make an affirmation for marriage i believe its called. This was the longest step for us.
We used a company near British embassy at that time (express translations) to get what we needed translated. Got them to go to MFA as well to get it all certified.