We were disappionted with bike rental on CC.
The first issue we had was that the bikes were not being maintained as well as I expected (had to try three different bikes just to get one that had enough tire pressure). Of course this is going back to the inaugural year that the Magic was sailing, so things might be much better now.
The other thing we were disappointed in was there isn't much room to bike. Basically just a short path to the runway, the runway it's self, and a short path behind the adult beach.
Now for people that don't ride a bike very much, this might be just the right amount of space to bike. But my wife and I were used to 5+ mile rides in our neiborhood.