We will be in Venice 2 full days this summer and want to get 48 hour vaporetto passes.
1) Where is the best place to purchase them? (We will be staying very close to the train station)
2) Should I buy them in advance to save some money?
3) When does the clock start ticking on the 48 hours - when I buy them or when I first use them?
4) Any other specific things I should know?
Thanks!