We arrived on Friday 29th July 2022 for a weekend stay that we had planned together with my sister and her family. We travelled separately to the site, and we arrived mid-afternoon. Unfortunately, my sister was delayed on her journey due to a traffic accident and diversion. We advised the campsite reception staff of this upon arrival and asked for an adjacent pitch to be reserved for them. We made this request because my sister's adult daughter has special needs and suffers anxiety when placed in an unfamiliar situation. This would be far less likely to occur if our two motorhomes were pitched side by side. The staff refused this request, despite my sister having made a booking and being en route to the site. The site was far from being at full capacity and we found several suitable locations where adjacent pitches were available. We subsequently set up and placed a table and chairs on the adjacent pitch, awaiting arrival of my sister's motorhome within the next hour. There was no issue with this until these were spotted by a staff member driving past on an ATV. He rudely insisted that the table and chairs were removed and would not entertain any discussion, simply repeating that "rules is rules" (sic). My sister actually arrived 10 minutes later and came through to the adjacent pitch which was unsurprisingly still available, as were the others around us. There were no new arrivals after my sister which the staff would clearly have known. It was not a pleasant experience and confrontational for no apparent reason.This uncooperative and unhelpful treatment by the site staff spoiled our holiday and we will not be returning. This is the second poor experience that we have had with CAMC and we will not be using them again.