Sky, we are also Oceania cruisers--have done 5. For us AMA and Uniworld are the closest to O. We have sailed the Duoro with AMA--picked them because we liked their pre cruise better than Uniworld at that time. It is a wonderful itinerary--port is fantastic and fre flowing at dinner. The food was Portueguse (sp.?). Great international mix of pax. We stayed a few days extra and took the train back to Lisbon to fly home. Pat