Hi Debra, I just returned a day ago from a month in Italy, south to north, final stop being Venice. It is not so complicated, although getting around from place to place in Venice can take some time and quite often involves some getting lost, which can be enjoyable, unless you are trying to keep to a schedule for tours, closing times of sites, etc. Ferrovia is actually the name of the vaporetto (water bus) stop right at the train station. Near the train station is also the bus station and the parking garage, all at the inland (west) end of the city. East of that in Venice, everything moves on foot or by some form of boat. All of the activities you mention are easily possible, although you may have trouble fitting them all in if you are staying just three nights, meaning two full days. By "go to islands" I assume you mean Burano and Murano, maybe also Torcello and the San Michele cemetery island. Each island takes some considerable time to visit, plus time on the vaporettos, and often waiting for vaporettos at the stops. These islands will take a good chunk of one of your days, or a whole day if you visit more than two of them. A 72-hour vaporetto pass for 35 euros makes sense probably only if you plan to visit some of those islands. Vaporettos are often very crowded, think NYC public buses, and are often slower than walking within the city. Easiest way to get in from the airport is usually by very frequent airport bus to the bus station, then walk or vaporetto, depending on where you are staying. I think there is no reason to even have the word "Mestre" in your mind, let alone on your itinerary. I don't know why you think travel from Mestre is cheaper, I have never even been there in several trips to Venice over the years. Yes, it is best to just buy tickets for each site when needed, unless you plan to arrange for a day tour, or pre-scheduled tour of a particular site, like the Doges Palace. Traveling light is very important for Venice, where you will likely be walking some with your baggage, including up and down steps at various major and minor bridges, most of which do not have ramps. There are constantly people, tourists and locals, rolling their suitcases around town, many more than I have seen anywhere else. Big or heavy bags mean more struggling. If you have more specific questions I'm sure that I or others on this forum can help.