Oh hey, there were dovetails at AXPONA too!
I've been to the Marriott Marquis Chicago a few times now and there are a number of incredible places to visit, shop, and eat a short distance away. My favorite pizza place is only about 20 minutes up the road; the Field Museum and McCormick bird sanctuary are practically right around the corner; the Art Institute, Navy Pier, and Magnificent Mile are a short Uber away, Chicago's Chinatown is a short walk away... You'd better plan time to do all sorts of stuff downtown.
Also it wasn't open when I was last there, but the hotel has a really sweet dining hall-like area with something like 5 or 6 restaurants inside which means lunch during the show is going to be a snap. Listen one floor up, come down to grab a bite, then back to listening.
Oh that's awesome to hear about the Lunch-Hall on site! I'll have my vehicle yet again so no Ubers for me but I can certainly fit 4 people comfortably so here's to hoping I can try some more Local Cuisine this time around!
An I meant this kind of "Dovetail"

Ya know, the tasty kind!