Very Pleasant experience overall I had my appointment 9am. 8:30 we got there and waited outside of the building for 40 min!!!! Went to a 13th floor and was called around 9:30. Interview took just 10 min IO very nice spanish looking woman asked me for passport and nothing else. While looking trough the file she asked me few questions about my previous F1 and O1 visa, if I travel outside the country while staying here and where. My husband was chatting with her about big line outside and how long we were standing and waiting. (he forgot his jacket home and really got cold bc line was moving so slow) So make sure you dress warm lol I got approved!!!!!!!!!