If you are on your way to the hotel from the airport and need lunch this is the place to stop! I highly recommend the NY Reuben.
It is an awesome zoo! If you are lucky you'll be able to see the orangutans swinging from the monkey bars.
Local brewery with good food and great beer. It is very close to the hotel and is worth stopping in for a flight.
Portillo's is a popular Chicago chain restaurant with Chicago hot dogs and a lot of other quick eats.