Who even knew that you could reserve a place when you are camping? Do you just call someone and pay them to place this sign in the ground or do you come early and claim your spot? Well, it's clearly not the best of ideas as these people picked just about the worst possible spot to reserve. No one in their right mind would want to set up camp in a place that is more of a swamp than ground.
At least they don't have to worry about anyone taking their place! Without a doubt, their reservation is safe.