My wife's interview was today @ 10:30 in Orlando. We didn't take the 4 children since they (and me) only had our biometrics done last week, so knew we would have to go for seperate interviews after my wife.
We arrived at 10:15 and my wife was called in immediately for interview. After a minute I was also called in as they agreed to interview me anyhow, even though my background check was not complete.
She had been asked to only take original birth certificate and passport (although we had other documents ready just in case).
We were not asked to show any documents what-so-ever, not even birth or marriage certificates. We both swore the oath to tell the truth. Carolyn was interviewed first, which simply consisted of verbally confirming name, date and place of birth and how many children. Then the lady interviewer stamped her passport as aproved, then asked me the same questions. This means that once my background check comes back I do not need to go for interview - my GC will just be mailed to me.
The interviewer then went on to approve all 4 childrens GCs even though they were not present, which was a relief as I didn't really want to have to take them for interview as it's a bit of a hassle.
Every thing was very straight-forward and the staff at USCIS all very plesent and helpful.