Just finished the interview from R3. In general, the staff is very friendly. Questions are expected ones. But In my preparation, I didn't speak out, but just thought silently in my mind. So during the interview, especially at the begining, I felt nervous and didn't speak very fluently. As the interview went on, I get more relaxed and did a better job at the later part. My suggestion to others is practicing your answers with loud voice. You will feel more comfortable when you are at the real interview.