Had to wait in a line of people all appointments were at same time they seem to take a group of people at a time. first you get your passport checked. then go through security , then you can enter building, once in you are given a ticket number. When your called you go up to booth and they check your dos and take your fingerprints, ad then you sit back down and wait for interview... this is done at a booth, takes around 20 mins. they check docs ask you a few questions. and then if you meet the crieria, advise you 2 weeks for visa... all in all 90 mins... i was impressed...