Owners of private campgrounds have a vested interest in knowing what's going on. Imagine that you park the RV and take off in the toad for several days. Is this an "RV Dump", meaning that they don't plan on returning? An RV that you can't sell is really hard to throw away.
OR, are the people in the RV ill from a gas leak or some other reason for being unconscious?
OR, are they parked there but visiting relatives for several days?
The simple solution is to tell the folks in the office if you intend to be gone more than one day and give them your cell phone number.
The CG owners may not notice or care, or you could be pulled over by the state police.