Due to shipping issues because of COVID-19, my wife was unable to take the original documents (divorce decree) to the interview. I was worried that this would be a problem because she only had a copy. They didn't even ask her for it. All they asked for was the medical test results and a copy of the DS-261 forum. They asked her about 7 or 8 standard questions, and told her
that she is approved and to come back in a few days to pick up her passport.
She was offered her a translator but she didn't need one. They were friendly and professional.