If i remember correctly it was a two day affair: The first day starts at ~5pm and they have a reception for all the students, most people go out for dinner and drinks after than, then the M1's took us out to a bar to check out the nightlife. The second day there was breakfast, informational session on several different topics; Financial aid, research, curriculum, ect. A mock "TBL" case, and some other options for tours and workshops.
I stayed with a student host (who was awesome) and was willing to host me for a few extra days even though they had a renal exam the following Monday!