We docked at Marittima and it was a good 3o minutes to Marco Polo Airport on the bus arranged by Princess Cruises. The cost was $59 US per person one way. There is no way with luggage that we would have schlepped it to a taxi. Exiting the cruise terminal in Venice is a real zoo. So much simpler to let the cruise line arrange things. I would assume it would be the same on the way to the ship. THe way I see it is, you pay a fair amount for the luxury of your cruise, why nickel and dime for the cheapest way back and forth to the pier. YOu will be much more relaxed with a cruise line transfer. My opinion.