If you want to be always on the top of other gamers, just follow the simple instructions and become the best player. For example: If you switch to Creative Mode after a respawn, you can fly to the spot where you died to quickly retrieve your items. Switching between Survival and Creative modes can be quite useful.
As long as you clicked 'Allow Cheats: On' when creating the world (under the 'More World Options' button), these cheats will work.