The Hop on Hop off tour was excellent!!! We were a little confused at first because we were not sure where to get our tickets or who to give our vouchers to. We walked around a bit confused for awhile, but once we got our tickets we had a great experience for the rest of the day and night. The trolley operators and tour guides were very informative and helpful. we were able to see more of Chicago then we would have experienced otherwise. Thank you for your service.