We have cruised on Celebrity, Disney and Royal Caribbean, and must say that the Jade was as good as all these in most respects and even better in some.
Cabin - We accidentally booked a handicapped cabin with a partially-obstructed view, 8100, as it was roomier than other ocean view cabins. It was good, we had no problem with the shower having a curtain instead of a door, as the floor sloped slightly and water never splashed onto the bathroom floor.
Food - Breakfast. We only ate once in the diningroom, as the buffet offered a very wide choice, thankfully including "english back" bacon as well as the overcooked streaky. Huge variety of eggs and other hot and cold offerings, including smoked salmon were available.
Handicapped room, quite spacious. Despite having a partially obstructed view, the lifeboat blocked only the lower third of the large window. Good location very close to aft elevators, and one to two floors above the entrances to the 2 main dining rooms.