I ran into Lee Martindale while she was waiting for an elevator from 2 West to 3 West for a panel, and she said that the bathroom on that floor (outside Crystal Ballroom) was the only ACTUALLY accessible handicapped stall. Most of them were rather...narrow. No space for wheelies at all. More the "person with minor mobility issues who needs a bar to stand back up" than an actual accessible stall, really.

The hotel itself had issues; I wonder if that's the best-suited convention space in Chicago... (I don't live there, so I can't say).