Our interview was scheduled on January 17th , and like everyone else we were anxious for our interview. We applied for a K2 visa in addition to the K1 so the three of us attended the interview together. The Rio consulate is very tranquil, you really don’t have to worry about the interview if you come prepared with all the right documents. There were a few people who did not come prepared with the proper documents and had to leave or look for their documents online in order to print them out. If you submitted sufficient proof of your relationship the interview should be easy. We brought a copy of our K1 packet, extra proof of relationship, and some other papers but the only extra document the consular officer asked us for was a receipt to prove that we paid 2 visa fees (K1 and K2) and not just one.