Our first trip with Oceania and we loved it. Previous cruises include Seabourn, SeaDream, Le Ponant, Island Sky, Windstar, Star Clippers, Hapag-Lloyd's Hanseatic, Paul Gauguin, and others.
Embarkation -- Seamless, speedy and we were sipping a glass of bubbly before we knew it. Luggage placed outside the door which was just fine by us. When the day comes that we can't move our cases a few feet, it's time to pack it in!
We bought the booze package and never found it intrusive to have to show the card. In fact, the best waiters/bartenders (here's looking at you, "D" in the Grand Bar) memorized our cabin number so did not ask for it repeatedly.