There is a small jogging track and well-equipped oceanview gym, as well as shuffleboard courts, hot tubs, and a golf driving cage on each ship.
Upgrades typically apply within one general type of cabin - oceanview cabins, for example, can be upgraded to better oceanviews, but not to balconies or suites.
While the cabin itself may not have a view, the rates are significantly lower than oceanview or balcony accommodations, and all the amenities are the same.