It's my turn to share my interview experience. My FO is in LA and needs security check when entering the building. There were a lot of people and I waited around 1 hour until IO called my name. The interview was around 10 minutes and only asked me to provide my ID, passport, I-94, I-20 (I'm a PhD student and work as a research assistant in lab), my tax return records, pay stubs, and my highest diploma. The questions were exactly same as I-485. After the questions, we just had a free chat regarding my major for another 15 minutes. At the end of the interview, she told me that DV-AOS is very rare even in LA and I should get my card within 3 weeks.
Hope this can help someone who are waiting for interview and wish everyone can be greened ASAP. Good Luck!
Congrats mike0916!!
On a side note, keep in mind that your interviews may be recorded, so watch what you say. Even if the IO looks like he's chatting casually, you are still under oath and he might be fishing