Went to Ravenna first. Took shuttle bus into town and walked around. Visited Dante's tomb. In Dubrovnik took the shuttle bus into the very pretty old town. We had visited before sand as it was very hot did not walk the walls. Had a cool drink at the harbour instead.
We really don't like Naples as we don't feel safe there We got off the ship and took a boat to Sorrento. It's very easy to do as the pier for the boat is right next to the ship. It's also much cheaper than a ship tour.
We overnighted in Venice which was wonderful. Very hot during the day but cooler in the evening. We found it easy to find our way around and had a lovely inexpensive meal in a square just behind St Mark's.