Niagara Falls, Canada
We purcahsed and printed our passes at our hotel at the top of Clifton Hill. We got a one day all-inclusive pass so we wanted to get sight-seeing immediately. We were told that we can redeem our paper ticket for the card at Nightmares, but it didn't open until noon. The other option was the Bird Kingdom (way down at the bottom of the hill, a half hour walk). When we arrived at Bird Kingdom, the rep said that her computer was not set up yet to print the Viator passes, and we would have to go to Nightmares to redeem them and begin our sightseeing. So we called Viator and they had someone come to the bird kingdom and print our card while we toured the bird kingdom. As an apology, Viator gave us a two day pass, but we were only able to be in Niagara Falls for one day, so we really couldn't use it. The card, however, was a good deal; easy to use and well worth the money despite the initial "glitch".