This was a really fun outing with work colleagues / friends. We originally wanted to do the sunset timeslot, but it was booked up (if you want that one, book at least several days ahead). Instead we booked the 7:00pm which ended up being perfect -- plus, we still got to experience the beginning of the sunset! I enjoyed seeing all of Chicago's architecture from the water, along with guided commentary explaining the various buildings and history of the city. Really great tour, well worth the price.