Chicago during the holidays
We're going to be having a small family reunion in the Chicago area Christmas week. We'll have a group that ranges in age from about 9 to 90 (I think there are going to be about 15 of us). My brother is familiar with the area, but I don't think he's ever been there with this crazy mix of a crowd. I imagine we'll split up part of the time, but would enjoy doing at least a few things as a group. My mom is the nearly-90 year old and is very mobile (although she doesn't move as quickly as she used to).
We'll be staying somewhere in the suburbs and will have a couple of cars. We arrive the 24th and will leave the 30th for Michigan.
Any restaurant recommendations for big groups? What shouldn't we miss?