Quoted from Time:So I decided yesterday I'll fly out to Chicago and checkout this whole pinball expo thing. Just coming myself. What should I expect?
Just stay in town and go to the Banning Arcade Expo in October instead.
Sunday might as well not exist, so you're really just going for Saturday. You're missing the Stern Tour on Thursday & the Pinball Life parties on Thurs/Fri.
Save yourself some money and skip it. If your interest is in the vendors, you can buy anything online that you'd find at Expo.