Cameras, closing piers, jumping over gates etc; the point is we should all carry our litter home with us or at least put it in a bin as we come off the pier, its not difficult.
If there is litter on the pier when you get there, do the proper thing, even though its not yours pick it up.
I know it has been said many times and once again in this thread, the Port of Tyne threaten to close piers at least once a year, make no mistake one day they will.
It cost less to put up cctv than it would a mans wage to keep the pier clean.