Hey, people who have been to Chicago/lived there, etc.--anything you think John and I should specifically do while we're there, or places we should definitely go to eat? Please note, we will not have a car while we are there. Also, the Taste Of Chicago food festival thingy is going on while we're there. Neat. I know a lot of stuff to do in Chicago, but it's hard to decide which would be the most fun/enlightening/cheapest.