Report from CW for application of 12month extension of "Thai Wife" Visa: Arrived 8.45am, received queue #58. Officers were processing at rate of about 10 applications per hour. So my queue came up 2pm. I submitted the same set of documents as for my original application to apply for the "O" visa plus 3 additional forms (you can can get these from the counter) and the TM7. Officer checked through my documents 5 times (!), all good. We have 1 child, they also requested birth certificate (fortunately I had a copy with me). Also ensure you have original of marriage certificate. Received my passport back at 2.45pm with the "Under Consideration" stamp to return 3 May (which I realised later is a public holiday?). There was also a paper stapled stating I need to make my 90 days report by 28 June.
TLDR : Answer Summary
The report describes the process of applying for a 12-month extension of the Thai Wife Visa ("O" visa). The applicant arrived early and waited for several hours before their number was called. Necessary documents included previously submitted papers, additional forms from the counter, a birth certificate for their child, and the original marriage certificate. The submission was checked multiple times, and the applicant received their passport back with an 'Under Consideration' stamp, along with a note for a 90-day report due date.