I keep mentioning the vaporettos. Here is a photo of them by the Rialto Bridge. Notice the traffic on the bridge.
Tonight after dinner I rode the #1 Vaporetto which is the slow route down the canal. That way people might be on board longer. There was a little girl seated behind me who kept looking over my shoulder as I sketched. Finally she just came and sat next to me to watch. When she got up to leave with her mother she turned around and waved goodbye.