Motorhome discrimination on cl

Having just stayed on a cl with a lovely grass lawn and views to die for, we were positioned 6 feet away from a sceptic tank and elsan point. We asked about going onto the grass, we were told that it was hard standing for motorhomes because they are heavy.  A twin wheel caravan with 4 x 4 and second car arrived, they pitched on the grass, which left ruts as they were in and out each day.  We tend to stay put as far as the motorhome is concerned, and use our legs and bikes. We shall not be returning to this cl as all the motorhomes who came and went were positioned around the elsan point and rubbish tip. We felt this was unfair.