<p>Thursday
Student Welcome, 8:30 PM. Because I'm going to be there.</p>
<p>Friday
Academic Fair, Athletics Fair, Arts Fair, 2-4 PM. Pick up free stuff and talk to people in your intended department, talk to people playing your sport (or shop around for a team to join, even if you didn't play anything in high school), and talk to people performing your art. All the fairs are next to each other, so you can go to all three.
Meet the Bloggers party, 8:30-10 PM. Again, because I'm going to be there.
Various frat parties, all night. Self-explanatory. ;) </p>
<p>Saturday
Premed panel, 11:30 AM-12:30 PM. I know there are a lot of premed hopefuls on this board.
Activities fair, 1-3 PM. You will probably be overwhelmed by the number of activities you can join. Free stuff here too.
Dorm tours, 1-5 PM. Make a point to check out at least four or five dorms you could see yourself getting psyched about.
A capella concert, 5:30-8 PM. The MIT a capella groups are super, and this is one of the few times you can see them without groveling for tickets.</p>