My interview was today and I couldnt be happier!
My appointment was at 8.20 and that was exactly the time I got there, thanks to the intense traffic in Rio. Everybody was very friendly, I was guided to the second floor where I filled a form with personal info and then I was called for the fingerprints and the guy was very nice and helpful. They handled me a paper with my rights after entrance in USA.
Then.. interview time!
believe you or not, he only asked me one single question: how did you meet?
after that he looked up some things on the computer and finally said: your visa is approved! yayyyy!!!
Sweet part: After the approval I said thank you so much, this is probably the best day of my life so the man replied: the best days of your life just started, congratulations!