I ended up at the Carlton - Midway. Nice place. Clean rooms and the staff was very friendly. Only took 12 minutes from the time I left the hotel parking lot until I was parked under McCormick place. If I go back to the Expo next year - I’ll do exactly the same thing. Well, unless I can get my company to pony up the extra dough and stay right at the Hyatt.
Thanks for all the help with this, everyone!