What documents are required for a 60-day marriage extension in Chiang Mai, Thailand?

Heads up for folks in Chiangmai applying for a 60 day extension based on marriage to a Thai.

I applied for the extension today and we were asked for our Kor Ror 2 which is the marriage registration. I wasn't expecting that. Note that this is different from the Kor Ror 3 which is the rose-bordered marriage certificate and is also required for the extension.

I wanted to point this out because the Kor Ror 2 was not included in a recent post that listed the documents needed at Chiangmai Immigration for this extension.