This has been in place in various parts of the country for many years. It is no fun if a camper, motorhome etc is parked outside your house with cooking smells , tv noise and the mess. I have seen it too many times to count - the frying pan fat and debris gets emptied on to the pavement, causing a greasy patch; toilets are emptied in the vague vicinity of a drain; wet washing flapping out of the window; litter bins stuffed full of their household rubbish, if it isn't just dumped alongside the bin.
These aren't travellers in the common sense of the word - these are holidaymakers trying to save a few quid on proper parking and facilities.