I would NOT recommend this tour or do it again. Reasonably priced but feels like just a drive around the city. There’s no signage at the stops so good luck making sure you’re at a stop.
Tours start at 10:00, but the bus didn’t show up to stop # 1 until 10:20 and it was full. We were in one of the historic buses which is cool, but very jerky and loud. Difficult to hear the narrator, plus he was doing the tour in both English and French, which made it very choppy to follow, and you got half the amount of a full tour information.
We did transfer to a newer coach for part of the tour and the experience was better, only English, nicer seats, not full, and you could hear the narrator better.
Compared to other hop on-off tours this was mostly pointing out buildings and very superficial history. The Mont Royal portion was very disappointing as it’s just a brief view of the park - not really worth the time unless you’re going to get off and walk the park.
Overall, a fair way to spend a couple hours, but would not recommend it to anyone.