We arranged our own travel, so no input on Oceania's air scheduling. We enjoyed the ship, the size of the stateroom (Penthouse Suite) and the tub in the bath. The food was good in all venues, service was not. Red Ginger was our favorite for the service and food. The service in the buffet was always immediate. We only ate in the main dining room twice and service was repeated at a level that we never ate there again during the entire trip. It was very slow an hour wait for the first course and even after asking repeatedly for ordered side dishes, they were not delivered. Advising restaurant management did not improve the service or the receipt of the dishes, but did solicit a apologies.
This was our first time with butler service and did not particularly care for it. To us, and this may be our butler, it felt intrusive. One day, in spite of noting a "do not disturb" sign being out, the butler felt it necessary to call and comment that, in spite of the sign, he had hors d'oeuvres for us. The sign was out because I was feeling seasick and wanted to rest; food was not a welcome offer.
Our room steward was great and always so pleasant and efficient.