I purchased the three event pass and we were able to do two tours, the architecture boat tour and the Hop on Hop off bus tour the first day and the Frank Lloyd Wright house the second. We definitely saved money and it was super easy to use. There are also free things you can pick up around town, including coffee and chocolate, as well as discounts.
The only problem was we wanted to do the observation deck at the Willis building and it said that it gave you express access but we were told we would have to wait in line with the people who were buying tickets and it was a 2 hour wait the day we were there so we skipped it.
Great value! It saves you over an hour wait at the Willis tower!!
We still have to wait in line. There isn express line as advertised your ad.