The Explorer Pass was convenient to have. It allowed us to see many great attractions while visiting Chicago.
Hop on hop off bus tour was a great way to see Chicago and I like the fact that the pass was good for 24 hours so we used part of the next day.... It was a good value.
I did not receive my pass for three months......the supplier was difficult to deal with......viator could not get a response and it took a number of phone calls from Chicago to get the matter settled. We chose the 3 activity pass and there were some savings. However, the description did not match the availability....e.g. The hop on hop off bus for north, central and south Chicago only goes in the winter. It is far better getting a public transport pass.