Everyone from security to the interviewer were all very friendly, smiling, and comfortable people. It was all very casual. The total time spent at the consulate was just over an hour. You will be in a room with other people who are all experiencing the same thing! We had a great time chatting about our experiences, where we were going, and how we met our fiances. The staff made sure we were at ease.
They did not follow their own documentation, but as long as you bring what appears on Packet 4 you will be perfectly fine!