I got the impression that the rotations and preceptorships are set up on a lottery basis. They give a bit of preference for the close opportunities to people who have no transportation. It sounded like there are people who wind up ecstatic after the lottery and others who want to shoot someone. I couldn't extract as much information about rotation selection as I wanted. I think the rural/statewide opportunities are a huge selling point of the school; you really get to have a unique experience and understand the various problems and challenges facing small communities.
My interview was pretty laid back and the physician mostly wanted to know about me and my motivations for pursuing medicine. I didn't have to actually field the "why Wisconsin" question, but I wrote about it in the secondary. I didn't care for the dynamic in the student interview. That portion is conducted with 2 students and 4 applicants. Quite honestly, I felt like the other 3 applicants were trying to outdo each other. I only spoke a bit and only responded to conversation directed toward me during that interview but it apparently went OK.
The worst part of the school is that they are constantly trying to tweak and improve the curriculum. This may sound alright, but things apparently change mid-stride during the semester--disconcerting for a new medical student. You actually have decent odds for admission at this stage. I posted the exact numbers earlier on this thread if you are curious.
Good luck on your interview!