My wife and I are both Diamond Plus with Royal Caribbean and sail every 2-3 weeks from Central Florida Ports (Port Canaveral, Tampa). We earned our status and always look forward to the great service and recognition perks for our status. The Oasis does not give a hoot if you are Diamond Plus. You are treated like cattle. Royal Caribbean, Company Policy (fleet wide) is concierge lounge and priority departure for Diamond Plus Elite. The Oasis only recognizes Pinnacle and upper suite guests. The Diamond Lounge on board the Oasis is always full and virtually impossible to get into. The so-called Diamond Concierge sits behind the desk and is rude, obnoxious, and she thinks she is the queen. Don't even think of asking her a question; her answer is always "NO".
The ship has many activities with long lines and long waits.
Avoid The Central Park Balconies: The staterooms are cramped and have no ventilation. If you open the Balcony Door you have no privacy.
The cabins are crammed with no ventilation. If you open the Balcony Door you have no privacy.
The shops are basically the same at every port. The mountain view and the ocean are spectacular.
If you have a mobility problem don't bother getting off the ship. The walk from mid-ship to the island is almost 1/2 mile and there aren't any jitneys or golf carts to drive you there.