I know there were a bunch of people wondering what Wisconsin was doing for the game. While it might not be advertising the game heavily they do have some events scheduled.

There are more details on their page but it seems to be pretty extensive.

http://www.uwalumni.com/home/athtravel11_windycity.aspx

Tour Package Summary

Included

Badgerville Tailgate ticket
Includes a ticket to the official Wisconsin pregame tailgate before the Wisconsin vs. Northern Illinois game at Soldier Field.
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• 12 p.m. (noon)–2:00 p.m.
• South of Soldier Field on Lake Michigan near the McCormick Place (map)
• Includes: Brats, chicken sandwiches, beer, soda, water and more!
• Live music by Maggie Speaks and the UW Marching Band
Included

Cocktails on the Terrace ticket
Wisconsin Badgers and NIU Huskies will join together to kick off the weekend at Millennium Park’s rooftop terrace overlooking Chicago’s world famous skyline. This cocktail reception includes live entertainment, Chicago-style food, beer and wine.
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Included

Full Tour Package — SOLD OUT
The complete Soldier Field Showdown experience! Includes round-trip transportation on a deluxe motorcoach from Madison/Milwaukee to Chicago, accommodations at the luxurious Palmer House Hilton Hotel, daily breakfast, game ticket, Badgerville tailgate ticket and round-trip shuttle service from hotel to Soldier Field on game day. Optional add-ons are also available with this package.
Included

Chicago Only Package (without transportation) — SOLD OUT
This package includes everything in the Full Tour except the round-trip transportation from Madison/Milwaukee — perfect for those living in and around Chicago or who want to make their own travel arrangements. Optional add-ons are also available with this package.
Included

Day of Game Package — SOLD OUT
This package includes a ticket to the official Wisconsin pregame tailgate and a game ticket in the Wisconsin section at Soldier Field. Optional add-ons are also available with this package.