I went for my second 12 month extension of my multi o visa (married to a Thai National ) yesterday at Mahasarakham immigration, after I had finished the application and paid my money I was sent to another desk where a lady asked quite a few questions and typed my and my wife's answers on her computer.
The questions were about my parents and my wife's parents... where we were born..how long we had been married had I been married before...when did I last enter Thailand and many other questions directed to my wife, the form she was completing on her computer was printed off and handed to another officer who pointed out mistakes...so we started again....the second time the form was signed off by the other officer and we were allowed to go... has anyone else had this when renewing an extension?
TLDR : Answer Summary
The poster describes their experience renewing a multi O visa (based on marriage to a Thai national) at Mahasarakham Immigration. After completing the application and paying the fee, they faced a questionnaire about personal details including information about both parents, their marriage duration, and other specific details. A second attempt was necessary after errors were identified, but the process was ultimately completed successfully. Comments from others suggest that experiences may vary, with some reporting simpler processes on subsequent renewals.