I was only there a little over an hour total- 30 min tour and 30 min faculty interview. There were only 6 interviewees there at my time slot. I went in about 10/15 min early so I had time to talk to the other interviewees before it all officially started. There were 3 current students there to give the tour and answer any questions. I'm assuming you could have stayed around after your tour/interview was done and any of them would have answered more questions. But like Smr2017 said, it was very laidback and the faculty/students/staff were so nice! They didn't ask any strange questions either so no reason to worry. I didn't interview with Dr. Jackson, but was told that he sort of always has a blank look on his face so don't think that he doesn't like you if you have him!