We arrived on Monday. The registration desk was closed on Monday and Tuesday. We decided to pay upon departure. On Wednesday, a man arrived on a bicycle and asked if we were registered. We weren't. He made out a receipt and we paid €57. We asked him why we had to pay for electricity we weren't using. Then he got grumpy and said, "We have one rate." We will avoid such campsites from now on. That is why there were few campers there.