the clean up after gets payed for out of the stalls pitch money.
So what about the travllers that came and stayed on some ground right below a bridge that was pubilc footpath in the area i live in, they used the bridge as there toilet for a week , it was not them that stayed and cleaned it, but my local council who i pay tax to, and every travller befor them have not cleaned up after them selves, maybe not all travellers are like this but every one that has stopped in my area have been dirty and could not give two shits about the mess they make or leave behind.