I went on a Friday morning to start my tour....It's was an outstanding experience the lines at the attractions we not long at all...no longer than 30 Mins the double decker hop on and off tour was very informative but dress warm..... The Willis tower gave an awesome view of the city
Definitely a saving opportunity...it included most of the key attractions and in some places allowed you to skip the queue and also avoided having to pay each time.
Well worth the price - if we hadn't purchased this card, chances are we would never have seen as much as we did . Had a great time in a fun city.