All eight of these ships, the three owned by Oceania, the three owned by Princess and the two owned by Azamara (a division of Celebrity, formerly), are all exactly the same design of ships.
They all once belongedf ro Renaissance cruises and were named R1 through R-8. They were all built within a few years of each other, from the same plans and in the same places.
Has anyone tried more than one of these brands and found a significant difference? Please tell me, I am dying to know.