How about, included in the camping section, a bit about etiquette on the camp sites.
Not so much "these are the rules", but some common sense do and don'ts to show consideration for your neighbours.
Not necessarily aimed at those already on CA but more for new comers that get told about the download.
It might help to stop the spread of offensive and bad behaviour, and make the whole camping experience pleasurable for everyone.
Obvious things about litter, vandalism, keeping an eye out for each other, etc.