I had my interview Jan 5th in Albany NY (AOS interview was in NYC). It was literally six minutes long. He took out the I-751 application and went through the first three pages asking us our names, birth days, place of birth, socials, marriage date and place, address, height/weight. He also looked at our photos very quickly, and took our updated documents. He said he would approve the application that day... so I anxiously check my mailbox everyday lol.... I don't think I'll actually believe it until my card is in my hands. When we were going through security, the security guards were talking to each other and were surprised that there were actually appointments happening that day/week because "there are, like, no cases." I have no idea what that means, but there were only around five other people there.
We had submitted our address change docs (AR-11 and I-865) in November, but by the time an officer had looked at them, we'd been scheduled for an interview, so we got a notice saying that they wouldn't accept our change of address and to file them at the interview. The officer took my docs (AR-11) but didn't want the I-865, and just crossed out our old address on the I-751 and wrote in the new one.
I also received my 24 month extension letter while waiting for my interview.