Strange how people will complain bitterly about the cost of camping yet they will book, & pay for, multiple days that they have no intention of using.
As an extended time traveller, rather than a weekend warrior, I seldom know exactly when & where I will be, unless I am making an event somewhere.
I like the policy of if you have not shown up before your the checkout time of your first day reserved, without some sort of communication why, you lose the entire reservation with a penalty.
Discourage the selfish campers with money to burn.