I know there are folks on this board who have sailed Oceania before and like it - not sure why they aren't responding!
We are trying Oceania for the first time over the Christmas Holiday (LAX to MIA), although it is on one of their smaller and older ships (Regatta). We just did not want to fly overseas, so this was the best and most reasonably priced itinerary we could find for a quick getaway. We are a very nervous about it, as we love Regent and we know it won't be the same.
We bought the premium alcohol package, as my dear hubby does enjoy his beer, and can drink quite a few throughout the day (and does not want to be restricted to meal time only). I also enjoy my wine and a nice scotch now and then, and felt the package would be cheaper than buying a bottle and a drink at a time. Anyway, I know it's still a ways off, but we will post a report after our cruise.