A good airport to be stuck in with two hour delay of flight. Visit the food court for multiple options to eat and drink. Potbelly rocks. :-) really do miss a Starbucks around.
WORST Hertz counter in the nation. They never have cars ready on time, they're rude and their cars aren't clean. Even if you're a Gold member, skip it and rent from someone -- ANYONE -- else.
Welcome to Chi City! While you're at Midway, be sure to grab a sammich at the glorious PotbellySandwich Shop. Eat like a local and load up with the hot peppers.