Doors open at 7:30am, however the line up started around 6:30am. My wife's appointment was at 8:30am, however we were turned away immediately and told to return in 30 minutes. Many people were told to come back for later appointment times.
Wife waited about an hour and a half before she was seen. She wasn't asked many questions. A few questions about me and where I lived and where I worked.
Aside from that, interview went smoothly, and she completed the interview about 2 hours after she went into the consulate.