First the positives:
The food, the food, and the food
As a lobster lover, my goal was to eat some form of lobster every day and I succeeded in that goal!
Midship deck 7 made for a very smooth and quiet cabin experience only disappointment was we booked 2 cabins next to eachother and was told by Oceania call center that they could open the balcony door to creTe one large balcony and when we embarked we were told" don't do that anymore because it is a safety hazard"
Mt Etna and wine tour through Viator excellent excursion
Fantastic walled city Walk off the boat and across the street and you are there.
Walked around town A bit or a tourist trap but very pretty. Probably the most boring (and the cheapest to dock at) port in all of Greece
Another boring port with little of interest to see. Dubrovnik or Split would have been much better to visit.
Private 1 hour gondola ride with guide through Viator was fantastic