We will be in Venice for 3 days in Oct. We actually arrive late on Saturday and we will have all day Sunday and Monday. Our cruise ship leaves at 8PM on Tuesday. Here is the itinerary I have come up with using my Rick Steve Venice book as a guide. Please tell me if you see any flaws.
Sunday
9:00 Correr Museum
10:00 Doges Palace
12:00 Lunch in San Marco Square, explore
14:00 St. Mark's Basilica
16:00 explore San Marco Square
18:00 Campinile
17:00 Dinner
Monday
9:00 Explore lagoon by vaporetto vistiting Murano, Burano, and Torcello
14:00 Tour Ca Rezzonico
15:00 Self-guided walk ST. Marks to San Zaccaria and catch
vaporetto to San Giorgio Maggiore
17:00 Self-guided vaporetto Grand Canal Cruise
18:00 Dinner
Tuesday
9:00 Self-guided walk from St. Mark's square to Frari Church
11:00 Tour Frari Church
12:00 Tour Scoula San Rocco
13:00 Lunch
14:00 Tour Accademia and explore Dorsoduro neighborhood
16:00 go to hotel to pick up luggage and take vaporetto to cruise ship