Agree, the queue to get in was crazy. We were handed our wristbands and told to move along quickly, only to be reprimanded by the UC security at the escalator for not getting them snapped in time. I enjoyed the museum over Navy Pier, but I do not have kids tagging along.
You should really look into tickets prior to arrival, scalpers outside of the UC are a risk. Allow at least 30 minutes for security, if you want the bobble head get there at least an hour ahead. For recommendations, it would help to know how many adults/kids? Some bars down Madison are ok for families. If you arrived earlier in the day there is ice skating at navy Pier, Maggie Daley Park, Wrigley Field....