The University of Michigan maintains Campus Information Centers Website, with information on travel to Ann Arbor, a visitors guide and other pertinent information.
Arbor Web, a good general information site about Ann Arbor dining and attractions.
The Ann Arbor Summer Festival, a outdoor music festival has shows throughout the summer.
The Henry Ford Museum where the banquet is to be held.
The Ann Arbor Transportation Authority provides comprehensive bus service in Ann Arbor, including a Park and Ride service to ease access to campus.
The most comprehensive site is the Visitors Guide maintained by the Ann Arbor Chamber of Commerce.
Yahoo Travel maintains a list of Ann Arbor area attractions. There are also similar lists available from Lycos and 10Best.