I would keep an eye on the temps. If it looks like it will be above freezing, I wouldn't worry about it.WE have driven and camped many times in cold weather, even in the snow. One time in Gallop NM, it was 15 and snowing. Nothing froze. Next night in Williams, AZ it was 33.As long as you have the heat on it won't be a problem.But make sure you drain lines and dump as soon as you get home. I made the mistake of NOT doing that one time.It got really cold and windy that night.The next day everything was froze. But managed to get it thawed out with no damage.If I had left the heat on that wouldn't have happened. Live and learn. If it looks like days of freezing windy weather, then do as the others say and drain the lines and put antifreeze in the traps.