Tod Daniels thanks for re-posting your visa advice from a previous post. So I have decided that a renewal of my Non-O-A visa requires a medical insurance policy and a Non-O visa requires a border run every 90 days which I am not particularly in favor of. So now I have the option to change my O-A visa for a Marriage visa which would avoid the requirement of health insurance and border runs every 90 days.
So my question then is what are the requirements for a marriage visa having a marriage certificate from my home country to a Thai citizen and also having a Thai son age 24 living in Thailand? What paperwork will I need when making my application?