If you are worried about what the interview day is like, the interview schedule is roughly like the following:
7 am you show up at the student service office to pick up your interview schedule
7:30-8:00am a short orientation about the school and your interview at room 1136 (our major lecture hall)
8:00am-noon interviews
noon-1:00pm lunch break
1:00pm- 3/4pm interview
~6:00pm Dinner
The time might be off a little bit, but you get the idea. there will be tours scheduled throughout the day, and you will get the chance to visit some of the freshman classes. Hope that helps. Oh and bring something to read. Because if you happend to get the afternoon interview, you'll have to wait the whole morning.
p.s. it does snow here so bringing an extra pair of shoes suitable for snow is a good idea. Besides, the dinner place is ~ 10 min walk from your interview place.