Normal Form
The floating platform will take players again to another checkpoint. The racetrack is right below them and they can fight there, with the danger of getting hit by the passing karts. They can safely on the platform above the checkpoint.
Some of the places that the floating platform will take players is on an isolated cliff, the side of a fence along the racetrack and at the top of a castle tower.
Omega Form
Players will fight it out in the same floating platform as it tours around different parts of the racetrack. The difference is that it won't stop so there's no danger from racing Shyguys.