I think tourists thought of the old pull barge as an amusement ride...I can't ever remember hearing even one complaint about the cost. In fact, a lot of folks tipped the guys doing the pulling!
On the other hand, the toll for the bridge is a whole different story...tourists are constantly complaining about it. Especially folks from states that have a lot toll bridges. I think they are disappointed that they can't escape this annoyance when they visit "paradise."