The day starts with meeting current students and asking them about their experiences. Then you'll meet the Dean of Admissions and the rest of the staff. There was no presentation as I've seen in other interviews. Instead, the Dean talked to us for about ten minutes and then let us go to lunch. After eating, you'll go to your interviews which last about an hour each. You'll spend any breaks you may have in the student lounge, visiting with the admissions staff and taking a VERY short tour of the facilities (when I interviewed, the new building had opened only the week before. Our tour guide did not know her way around the new school).
P.S. If you get Dr. Skilling, be prepared to talk about health care in America. Whatever position you take, he will argue against it. He's not being rude; he just wants to make sure that you've thought through your answers.