We arrived on a Thursday and spent the night on the ship which would depart Friday at 4pm. We read about the water taxi and was able to immediately jump on the taxi near the ship and spend the evening San Marco and area. Spent all day Friday also running around Venice before returning to the ship for its departure. ATMs were everywhere!
Our original guy did NOT show up. Had done it through internet. Another driver talked to us...we went with him and were not disappointed. Took us everywhere...very nice experience. We renegotiated the price from the original internet price and save $60.
The museum had moved an 1 1/2 away...We decided to take a taxi and then a ferry to see what was an old Leper colony and fort. Time well spent. People who took tour complained about the long drive and little to see.