I've noticed that the activities that take place in the actual club (Fuel) tend to be the same on every RCI ship. What aren't the same are the activities that take place on other parts of the ship. For example, Allure of the Seas might have Teen FloRider time or Teen Ice Skate time, where as an older ship like Majesty doesn't have either of those. Also, ships like Freedom, Allure, Oasis, etc. have the Living Room, while other ships don't.
I went on a 3-night Monarch of the Seas cruise this Feb. and I have the teen compasses which I can email you copies of if you want to see the kinds of activities that take place in the club!
Hope this helped