Upon returning to the Site late at night in the dark I mistook the wrong barrier which took us on to a closed section of the site. I was greeted by a very grumpy male Warden who was unhelpful. I suggest if you don't want people straying into a closed area, you close both gates and/or put up a sign and/or (most obviously) change the barrier key code! I suggest you also Change your attitude to be more Customer focussed and understanding of users in unfamiliar territory! Otherwise, the female staff we met were very helpful. Site is awkwardly signed and placed off a roundabout which needs Care on approach and leaving.