There were only 3 people in the queue including me. They wouldn't let me get inside until it's 8.45am. although the interview was supposed to be at 9.00am I had to sit there until 10.30. Once my name was called I was directed to a small room-like partitioned area. The questions were very straight forward How we met, how old is your spouse, where did you spouse live before moving to US, where does your spouse's parents live, how many people were there at your wedding, He did not like describing the answers, just straight forward ones just like his questions. After the interview he gave me a 221g form requesting additional documents (I-864s, Evidence of relationship) submitted them the same day.