Enjoyed the tour with three friends, the guide was well informed and kept control of the group of a dozen or so people. Great to learn about Chicago history and architecture. FYI: the guide doesn't accept tips- thu he earned one!
Seeing the buildings and Art Deco aspects were good, but we ended up with a very mediocre docent, who dragged out the tour an extra 20 minutes with information that was, at best, peripheral to the actual tour. She read off of notes (literally read them to us) and when asked where the term Art Deco came from, she had no idea.
I have always loved Art Deco, so this tour was just what I wanted. The guide was very informative and well versed in the elements of art deco. The length of the tour was just right.