I had my AOS interview this morning (for a conditional greencard) at the San Fernando Valley USCIS.
We arrived at 9:05am - our appointment was scheduled for 9:15am (you won't be granted access if you're more than 15 minutes early). After presenting out initial documents at the window (much like at my original visa interview), we then waited for 45 minutes to be summoned for our interview in a little office.
The interview lasted about 20 minutes and the proof we'd brought was sufficient (we provided proof of our house purchase, wedding photos, our jointly filed tax return and our medical/life insurance). We were asked some simple questions, such as confirming each other's birthdays, full names, address, whether I'd committed any crimes/whether I'm planning any terrorism, etc. We were then asked how we met, what we did on our first date - and how/when my husband proposed - and this part of the interview was just like a friendly chat .
The only issue was my medical form - there is a section on there for Class A illnesses, which apparently the doctor was supposed to put a cross in each of the boxes to say I DIDN'T have those conditions. My doctor left those sections blank. I was quite surprised to hear this, as ordinarily with these types of forms, they tell you to put a check or mark in the boxes if you DO have them - and put nothing if you don't... unfortunately, I don't have a copy of that part of the medical, I just have a copy of the vaccinations section.
The interviewer told me she was approving me for everything else - and that she was going to check with her supervisor, to see if she could approve me for the medical also, or if I'd need to get a new medical done. So now we have to wait to see if I get a green card or a RFE! I'll update when I know more.