Tourists who intend to spend in Venice at least a few days, should take into account that tourist site of the city is situated on the water (the island without being able to move around the car). Although cars can be left in a special storage, but they are quite expensive.
It will not be a problem for those who chose, for example, accommodation at the campground and access by public transport. But you have to remember that night voyages around Venice must then finish with back by a taxi.