We did this tour at the end of our stay in Chicago, however I would recommend trying to do it early in your stay as it provides an excellent overview of the city and gives ideas for things you may wish to visit again to see in more detail. We were picked up on time in a modern, spacious minivan. Rick was friendly and knowledgeable with a great sense of humour. He recommended restaurants and places to visit along the way. Overall we were very impressed. Thanks!