Give serious thought in advance as to the type of vaporetto ticket you wish to buy - guide books will explain the differences among them. You may wish to hop on and off during your 2 1/2 mile ride on the Grand Canal for photos and/or shopping along the side streets. And if you're hungry for a snack, the local market is just the place to stop, especially for fresh fruit. If by chance, you hop off the vaporetto on the Canal side opposite the market, don't despair but look for one of the six traghetto stops along the Canal. For a tiny sum, you can ride - STANDING UP - ACROSS the Grand Canal and then find your market. No, the traghettos do NOT go up and down the Grand Canal but just ACROSS it. Do careful reading in advance about the vaporetto rates, routes, etc. and you"ll find it time well spent.