Ok, we've settled on holding the meetup at
The Bean, in
Milenium Park. You are encouraged (though not required) to bring your own lunch and perhaps a blanket.
If you meet us at the clock in the lobby by 4:30, don't worry about finding it - we'll all walk down together. If you're late and miss us, simply go across the street from the hotel to Grant Park and ask people how to find The Bean. Once there, just look for the big group of HP fans. :P
Please comment here if you'd like to be emailed our cell numbers, just in case. Or if you have any other problems/questions.