I do have an O/A and did all the paper work for a visa. 4000,00 in the bank. T he visa application required the marriage license, pictures of the family a, copies of the house registration and wife id, and a number of other ideas I can't remember. The passport should the day and had THAI Wife printed on the passport. I know you can have an O/A for marriage. Also had immigrations come to my house, talk to neighbors.