Think of all the fun-filled freedom you could have if you had the power of invisibility ..to disappear and reappear whenever and wherever you desired. The first thing I would do is invisibly head to the front of the line at Space Mountain, and take a seat in a car that isn't currently being loaded.
Then, I would quickly reappear (holding a blanket over me) when nobody is looking. Then, I would disappear again just before coming back into the loading/unloading area ..and do the same thing. I'd probably ride it 10 times before moving on to more hyjinx elsewhere.
What would you do with your bad self. The possibilities are endless.