The actual interview itself took 7-10 minutes and involved mostly one word answers from me. What's your fiance's work? What's your fiance's address? Etc. At this point I showed them a copy of the W-2, among other documents. The line getting into the embassy is what takes the most time--I arrived at 730am and didn't have the actual interview until around 10am. Staff were all friendly. Before you get to your interview there is a window where you're supposed to show evidence of a relationship (photos, mostly). Somebody goes through them with genuine interest--tsismosa talaga! Where did you meet? Etc. Nothing to worry about if you have a genuine relationship--just relax and enjoy the ride ;-)