I posted this in response to someone in another thread but I wanted to post it here for my friends filing in the RD to see...
Long time lurker, first time poster. We had our interview in Santo Domingo on Apr 27th.
I was present with my beneficiary for the interview, there was no issue with both of us entering the building. In fact, the majority of the people in for interviews that day had both the petitioner and beneficiary present. I think it was a benefit for both of us to be there as the interviewer asked us both questions about each other, each others family, how we communicate, how we met etc. The whole process from waiting in line to enter the building, handing in our documents and having our interview took a total of about an hour.
During our interview the only additional information I was asked for was additional pictures, which I provided 8-10, the woman looked over them and then gave them back to us. The interviewer was very nice and was easy to talk to. Our case was very tight from the beginning and we had loads of extra documents and evidence so our experience was quick and easy. My fiance was nervous but I was not. The process was actually much easier than I expected.
At the end of the interview the woman interviewing us told us the visa was approved. On Monday of this week, my fiance picked up her visa and sealed information packet from the Gazcue center without issue.