...Not that gangs of dickheads with flagons of 7% cider will appreciate being told how to behave...
That's about it but what exactly does one do about it that will be effective?
There's only one way forward. Attempt to banish the confusion and mixed messages Resonox has outlined above by arriving at a Code as suggested by VBB in the other thread. And get (well actually, shame) the official guardianship bodies and the media to subscribe to it to (for it's their mixed messages and wimpishness that confuse the issue and encourage disrespect for monuments).
Then, hammer it home in all directions, with a unified message from the public and the guardians alike. No it won't stop drunks but it WILL stop a lot of incidents.
And I'll erect some stocks and a whipping post adjacent to the Cove at Avebury so that the cider drinkers in the RL car park can watch their mates being 'educated' :-)
Simple alternative would be to employ Harry Hill to arbitrate all future disputes...
Not much of a rumble if everyone wants to get on to old biddies taking pictures but not the louts taking a piss.....treat 'em all as the desecrators they are!