My dh and I were on Oasis Feb. 6-13. These are my thoughts on the ship.
It was a beautiful ship. Central park is amazing and absolutely breathtaking at night. The Boardwalk area was really neat and the Aqua Theater was awesome. The Solarium was gorgeous and very tranquil, easily my favorite area on the ship.
However, it was REALLY crowded. Pretty much everywhere, all the time. I'm not sure how many passengers were onboard, but it was surprising to me how much more crowded this ship was than others I've been on. We've been on the Freedom twice, at full capacity, and never felt half as crowded. At times, the Promenade was almost shoulder to shoulder. I read others' reviews and they did not seem to have this problem.
I can see why some cruisers say you can forget you were at sea. We were blessed with storms and rough seas, so we unfortunately felt the ocean around us, but at times, I was almost desperate for a glimpse of the sea. Once I found the nice chairs on Deck 5 aft, I was happier. If you are one who NEEDS the easy access to the ocean, definately go with an oceanview balcony or be prepared to find limited public access to ocean views.
We also found the food to be subpar in the main dining room. We've taken 6 cruises in the last 12 months with RCCL now, so the menu is repetetive, but the quality was off. I suspect the crew is preparing meals on such a large scale that some of the quality suffers. We also found the windjammer to have very little variation at lunch. We did enjoy the Park Cafe for both breakfast and lunch, and the Solarium for breakfast, and both were free. The Seafood Shack was also good. We were unable to get reservations at Chops seeing as how we booked on this ship the day before it sailed.
The entertainment was good. We were able to book most shows from our stateroom TV once we were onboard, and never had a problem with our reservations. The comedy show kept trying to give us dates from December, and we never could get it fixed. We were told it was booked solid for the entire cruise when we went to the Box Office. Otherwise, we had no problems and enjoyed the shows. We did find that the usual free movie channels that play the same movie for your entire cruise were gone. It's all pay-per-view movies now or the basic CNN, ESPN, etc. The channel that shows the map of your itinerary, your current location, and the depth of the ocean where you are was also missing. I actually LOVED that channel, because it served as my in-stateroom clock, and it was always educational for my son.
We found our cruisemates to be mostly older couples or very young couples with small children. We had many rude cruisemates, and were really surprised at that. I know passenger mix is the luck of the draw, and we certainly didn't meet everyone onboard, but that was our overall impression. It was a very different environment than what what we're used to.
As a family with 2 children, we discussed bringing our children back for a future cruise on Oasis. We have decided against it for the time being, and are sticking to our smaller ships. I think the Freedom class are as big as we're comfortable with. While we enjoyed the Oasis, we wouldn't pay full fare to do it again.
So overall, it was a nice ship, but not our favorite. The Freedom class remains our favorite, although we do love the Monarch, and we're sticking to "small" ships.