Hi, today I went to Immigration Div 1 to renew extension of stay on Non Imm O (Thai wife) visa.
Some feedback, I had everything they required however Immigration wanted 2 copies each of the following: map of residence, photos of my wife and I, Passport personal information page, Kor2 and Marriage certificate.
I had one copy of everything plus originals but was surprised when a second copy was requested. Quality of the copies I had was fine. Everything was then accepted and I now have the 'under consideration' stamp.
So I suggest you have 2 copies of everything to be on the safe side.
TLDR : Answer Summary
When renewing a Non-Immigrant O visa at Immigration Division 1, it's advised to prepare two copies of each required document, including a map of your residence, photos of you and your spouse, the passport's personal information page, a Kor2 form, and the marriage certificate. Although one copy may sometimes suffice, having two copies is a safe practice as it aligns with standard immigration procedures, especially since documents often need to be sent to Bangkok for approval. It's also recommended to check your documents in advance and arrive early to facilitate a smoother process.