We have taken the Tortuguero Canal excursion twice and loved it. We booked it on the ship.
One time when we took the Canal trip, our friends did the canopy tour. We saw many, many birds and also some monkeys. They didn't see any wildlife and were very disappointed.
I'm sure the zip line and canopy tour, would be fun in a different sort of way than the boat trip, but I wanted to tell you our experience.