It's a pretty chill day, so there's 2 sessions, a morning session and an afternoon session. I was in the afternoon session (day starts at 10:45). You have 2 interviewers, usually one faculty and one student. I got both faculty. They have the typical orientation stuff starting at 11 for the afternoon session, followed by the interview coordinator telling you where exactly you need to go for your interviews. Then there's lunch and tour with med students, and then your interviews, and then you're done! Pretty chill day. You should stay with a first year med student, since many of them live in the harkness dorms, which are right next to the admissions office.