For my interview, we got there at I think about 8:30 AM (there were 6 interviewees, myself included), and everything started around 9:00 AM. There was a one-hour orientation / introduction / talk about the interview day and school at the beginning, and then we started a tour of the facilities with 3 med students. After the tour, we had lunch with the students, and then we continued with a tour of University Hospital's emergency room. They were more than willing to discuss anything to do with the interviews or school.
In the afternoon, there are 3 interviews. 1 is blind and the other 2 are open. I think they structure them so that your first interview is the blind one, but I'm not sure if that's the rule or if it's just that the only people with whom I've spoken have had their blind interviews first as well.
During the blind interview, I think my interviewer was trying to intimidate me... he asked me what I was smoking when I described a gap in my record... he told me I had a low self-esteem.... he said a lot of **** that might have been offensive. I laughed at him. I felt like a raving lunatic, but I just treated it like he was joking and laughed at him. It was the best way to cope, and it paid off cause I got in lol -
The other two interviews - where they had my grades, scores, personal statement, etc, in front of them - went really well because it was less about trying to throw me off track and more about discussing in depth the things I had done, and in a more round about way discussing what I valued. They really are looking for people who are a good fit with the students at LSU, and if you can identify that during the tour and be able to sell how you are a good fit, it'll help your case. I left feeling really good about the interviews.
Oh, also one thing I did to prepare was have a mock interview with some people who used these questions to do the interview:
www.colorado.edu/aac/PreMed_interviewquestions.pdf
Best of luck!