hi i am arriving in marco polo airport to go on a cruise in july. i got transfers to the cruise liner and will be there at around 10 am in the morning. the ship isnt sailing until 18.00 and it seems such a waste to spend the time on the cruise liner. i was looking at ways to get into venice and back fairly fast and cheap for a few hours. we are sailing with msc, we are a family of four with teenagers relatively fit and dont mind walking. all ideas will be gratefully received!!