After getting my tickets this morning I went to book a hotel room using my contacts and got a response back that all of their hotels are booked solid. I did a bit more research and noticed that 90% of the hotels in the downtown Chicago area are booked solid due to the ASCO Oncologist Convention at McCormick place. Just a FYI to those attending the Chicago show and coming in from out of town.
The few rooms that are left in the city are very expensive, have 2-5 night mins, or way outside the downtown area. I would suggest Air BnB to anyone looking for places to stay in the downtown area. The outer areas of Chicago have rooms (Rosemont etc.) and easy to get to by train from Downtown.