We decided to try this in order to get an overview of Chicago and decide which places we might want to re-visit. We got a 2-day ticket, so had quite a variety of guides/driver. All the driver were excellent--amazing how they wrangle those enormous buses through the busy city streets--but our favorite guide was Wanda. She knew a lot of history, was funny and charming and generally terrific. Pick the nicest weather you can, ride on top of the bus, stop at Portillo's for lunch, and have fun. BTW, do be aware that there are no benches or other seating at the bus stops, with the exception of Navy Pier. Also, the buses do have ramps if you're "on wheels" like me.