This was our 3rd RCCL cruise and our first on Oasis. All I can say is WOW! The ship was amazing and while it was huge, it never felt crowded or overwhelming. Starting with our checking in at Terminal 18, it is obvious RCCL has mastered the art of moving large numbers of passengers quickly and efficiently. From dropping the luggage at the curb, parking the car, going through security, checking in, boarding the ship, to sitting down for lunch at the Park Café took all of 30 minutes (or less!). We got to the Terminal at 1130 and were sitting in the Park Café by 12N. Our cabin was ready just before 1PM so be dropped our carry-ons in the cabin and started to explore the ship. The cabin was an Ocean View Balcony on deck 8. Great location, just aft of the elevators on the Central Park deck. It was very convenient to go to the Park Café for breakfast or to sit out and enjoy the music in the evening. The cabin was very comfortable with enough closet space and shelves/drawers for all our "stuff". The bathroom was well appointed and the shower large enough to accommodate a large person.
We had main seating for dinner and was placed at a table for 6. One of the other couples assigned to our table had purchased the specialty dining package so they only ate with us twice. I would have preferred a larger table but otherwise the dining was fine. Our waiter was very attentive and after 2 nights knew our preferences without asking. All our meals were well prepared and very tasty. For breakfast and lunch we either went to the Park Café (the BEST hand carved roast beef sandwiches!), Windjammer Café or the Solarium Bistro. The Solarium Bistro was very convenient during our sea days when we were laying out in the sun! The food there was lighter fare with lots of salads and seafood. All excellent. We did don one specialty dining and that was the Surf's Up party at the Sea Shack. The price of the party included 3 cocktails and the food (crab legs, ribs, shrimp, fish filet), fries, corn on the cob, fried shrimp & calamari, and chips and salsa) was all very good. There was a DJ and cruise staff leading dancing and games and it was all a lot of fun.
The entertainment on the ship was by far the best we have ever seen on any ship. I really like the fact that one can reserve their entertainment so there is no need to get to the theatre way early to get a seat. We saw all the shows and really enjoyed all of them immensely. The Aqua Theatre show reminded me of a Cirque d' Solei but on/in water. The iceskating show was also very enjoyable. The Opus Theatre was huge and I don't think there was a bad seat in the place.
The fitness center was well equipped and I took 5 Fly Wheel (spinning/indoor cycling) classes. The instructors were excellent and the bikes in excellent shape.
The ship was so big that it never felt crowded. The elevators were easy to get on (even on disembarkation day), we were always able to get a lounge chair by the pool, the hot tubs were never crowded and we could always get a table in the Windjammer Café. The ship appeared very clean and we never saw room service trays/plates in the hallways. The crew in the Windjammer and other breakfast/lunch eating areas quickly cleared tables and anything that was spilled/dropped was quickly cleaned up.
I can't say enough good things about our cruise on the Oasis. It far exceeded any of our expectations and I can't wait to sail on her again.