Not been my experience. They seem to be allowed to get damaged before being closed off. An example that I do recall that made me laugh out loud was at Shawsmead site near Aberaeron. It had rained for many days. The warden asked me to use a grass area. I said that there was no way as I knew how bad that area would be. If the site was not suitable I would far rather be cancelled. I would find an alternative. The warden relented. Unusually, as it was raining heavily I used the car to pitch the caravan. It was a tight turn and the car's front wheel rolled 18'' into the grass area and left a 9'' deep trench. I reported the accident when giving in my pitch number. The warden tested the grass are with is heel at a number of points and then removed all pegs.