Today I went to Chiang Mai Immigration at 9:00 am to submit my application for a Non-0 visa (married to a Thai). After about a 2 hour wait the document checker reviewed my packet of documents and gave me a new queue number. The new queue number came up very quickly and the next officer started reviewing my documents (original and copy of each). The only problem was I had to redraw the map to my house (twice) because I had used a prior revision of the form. Around 12:00 I paid 2000 Baht and got a blue paper stapled in my passport. I was told to return to immigration on 31 Jan 2024, so apparently my trip to immigration was a success. Thanks to the experts in this group for their advice!
UPDATE: Today (Jan 18) Immigration called to say they need copies of my daughter’s birth certificates which I had in the package and they told me to take out. Mai Bpen Rai.
UPDATE (Jan 31) - I got 3 months Non-O at Chiang Mai Immigration in about 40 minutes. They said in I can apply for a 1 year extension in 2 months.