The tour showed us the two best sites in the US side (boat of mist and cave of winds), unmissable. Then we moved to Canada for lunch and short visits to the Canadian falls and swirling rapids, plus visit to the Tower. The Canadian side could have been a little more developed, perhaps with an additional hour.
Our guide, Nancy, was a really nice and inspiring leader. Always taking care of our personal needs during the trip. She made the tour very pleasant. 5* for the guide Nancy, maybe only 4* for the tour (could be better on the Canadian side- add an hour!).