Where are you staying near? Michigan Ave?
Sounds like everyone beat me to the punch. Save the trip to Navy Pier for later on wens and saturday cause they have fireworks.
If you're looking for food, besides the taste, there is Ed Debevic's, Gino's East, Giordano's, Gene and Jude's, Superdawg, Manny's Deli, Grand Lux Cafe to name a few but all food in Chicago is good casue rent isn't cheap so if you're not bringing in customers you're closed.