Fortunately, We haven't ever in our 54 years of camping/RV'ing experienced any "campspreading". However, have had very loud party'ers or drunks a few times and a couple times with unruly undisciplined kids next door to our sight a few times. We do approach the neighbor and politely explain and ask them to cool it and only once did they not stifle it. I reported them to the management and they stopped by to observe and the people were made to pack up and leave. Problem solved!
We always scour our site for any trash or dog droppings even if they were not from our dog and then most always take out the collapsible rake always carried and rake the site earth into a small pile next to the CG road for easy pickup and leave the site cleaner than when we had arrived. We have been thanked so many times by the management or workers and it has paid us back so many times over. When we call for a site often they made sure we got a really good site and we so appreciate it as it's a 2 way street of respect. They knew we were very responsible campers and they wanted us there! What's not to like???