I called this place to see if my group and I could take the night tour on the same day without a reservation. The man said that was fine and to come at a certain time. He stated that we should come a little before 5 or at 5 and we did. When we got to the store the same man that I had spoken with said there was space in the tour but we would have to come back around 745 because the night tour started at 8. Our group was a little puzzled because we were told to come at 5 which was nearly 3 hours before when we would actually be trained and settled on our bikes to start the tour. But we didn't mind, this was our last day in Montreal and wanted a fun experience. We went to a bar to kill time and came back around 730 when the same guide told us that he had to cancel the tour because he was not feeling well. We were really, really disappointed by this. They didn't take any of our information (name or phone number) but I wish they did so they could have had a way of contacting us in situations like this. I don't blame the guy for getting sick but we wasted 5 hours of our time with our drive and wait time which really sucked.