Oasis is a great ship --- lots to do, great staff, wonderful dining opportunities. We loved our cruise, but feel we need to mention two negatives.
On Oasis, you can purchase a beverage package for soda. Their are seven soda machines on the ship, four in Windjammer Cafe. As any given time, several of them are broken; also, when the Windjammer is closed, 4 of the 7 are inaccessible. We paid $140 for the 7-day drink package for the two of us, and getting the soda was often a hassle.
Also ... we have enjoyed Labadee for nearly 20 years. However, the joy is gone. RC tries to cram far too many people in a relatively small space. They serve lunch from 12-2, but the buffet-style lines usually had 50-125 people standing, waiting, baking in the hot sun No fun.
Clean, functional, just great for two people
Too crowded, poor food offerings