Keeping them apart is a very good idea. If that isn't possible, then it should be very simple--- no generators sundown to 8 am.
And absolutely NO external (i.e., not built into the RV) generators allowed.
Virtually all RV's have refrigerators that can be kept cold on a smidgen of propane. Interior lights, etc., all can run on batteries. Usually the toilet flushes on 12V.
Air conditioning can't, but for Chrissake you were in Nova Scotia! Open a window!
Of course you have to have decent batteries, keep them charged, and not run hairdryers and curling irons and all manner of other things on inverters.
The problem likely is that the guy wanted to be off at concerts between 9AM and sundown, not at the RV running the generator to charge the batteries.
The rule 'no generators' should be documented, should be 'for any reason' (in other words, don't tell us that Ma has a heart condition and needs to have the A/C running--- go to an RV park with hookups, then). And the rule should be that if you violate that rule, they can tell you to pull up and leave. NOW.
Similarly, festivals with camping should have a 24x7 mobile phone number so that when some self-centered jerk starts up the genset at 3AM, after being told to shut it down, the security person comes out and tells him to roll it on out of there.