Arrived at embassy at 4am where there were already around 20 people in the K1 line ahead of us. Actually got into the embassy around 7am where everything moved relatively fast and orderly. Went to 5 different windows. First window was to drop our first set of documents off for review, second window was for finger printing, 3rd window was for pre-interview, 4th window was final interview with US consulate where we were told we were approved, last window was to confirm any final instructions. Everyone was really friendly, including the consulate and it was a great experience.