They are all the way from non-existent to state of the art.
AKL The coolest view of most any Disney gym. The only better view from a Disney treadmill is on the Wonder at sunrise. It is a typical machine set up with sufficient room to not feel crowded. It has a decent free weight area; unless you are looking for the heavy stuff.
BWV Crowded. The machines are close to one another and the free weight area feel like it is in the middle of the isle. Cardio equipment is limited at peak times. It is one of the older gyms on property.
Contemporary The gym looks new but this is one that I have never visited.
OKW The oldest feeling gym. The air never seems to work, I do not know if it is because of its relative location to the pool bath or what. The gym is dark and crowded.
SSR The state of the art club. This is the largest gym on property. The gym has numerous cardio machines. The weight machines are well organized and the free weight area is larger than most resorts. It has a feel of new and the best.
WLV Never been
Yacht and Beach nice gym that overlooks the boardwalk side of the resorts. Has a nice free weight area. The feel of the gym was a little jumbled, but this is an 8 yr old observation
It looked at the time that they were in the middle of a gym remodel job at the time.