When dumping and refilling your tanks, please get it done in a timely manner. I had an instance on our last trip in a national park campground when the user took over 45 minutes. It appeared they were flushing their tanks. They had a hose from the fresh water station running all the way back to the trailer while they were still hooked up to the dump station. He looked up at me after more than 40 minutes, smiled and flashed me the peace sign. I could only glare back as I had much better things to do with my afternoon.