Marriage Extension Requirements - 3 questions in Thai visas, residency and work permits Posted February 14 1 hour ago, nahkit said: Just to muddy things even further, at Khon Kaen this week we were told that we could no longer use a Kor Ror 4 when doing a marriage extension, it must be a Kor Ror 2. We've been using a Kor Ror 4 (new one each year) for the last 4 years. They then accepted the Kor Ror 4 anyway but said they may call us back to provide a Kor Ror 2. I gave them matte photos and they were ok with them. I also had to provide 2 photos of my 27 year-old son plus a copy of his id. No idea why, having children isn't a requirement for a marriage extension. They also spent some time asking about my family back in the UK, mother, father and sister. At the end of it all they had both myself and my wife sign a paper each which was completely in Thai (apart from my name) without any explanation of what it contained. I do my extension at Khon Kaen as well and was told the Kor Ror 2 was only valid for 1 month, which means getting a new one every year. Most of my family details are already in their computer database so wasn’t asked any questions concerning family back in Australia, and no problem also with matte photos provided we only supply 2 photos showing letterbox with address, 1 outside garage and 1 in the garden never any inside the house and they are fine with that.