People tend to check in during these times:
The coffee is horrid.
Goto the 67th Floor and take in a breath taking view of Chicago for free. Stop by the Metropolitan Club on the 67th if you want a drink with that view.
Best office ever!
The Dunkin Dounuts on Adams is 24hrs
The Subways on Addams is open 24-Hours
Beware the elevators. You go down, the doors do not open and then you go up for the next pickup.
Lots of great places to eat down here...much better than at ElkGrove