It wasn't s'posed to get THAT cold!
We unwisely turned north from sunny Florida to North Carolina at end of February. Stopped overnight in Colleton SC and camped in a field with 3-point hookups. Well, he called it a campground but it looked like a field to us.
Forecast was 32 degrees, you know, just barely freezing. I awoke at 0500 hours to pee and no water flushed the toilet. Just silence when I pressed the pedal. Hmm, check the outside temp and it says 24 degrees. Always gets colder toward dawn, so how cold will it get?
Oh heck, we left a brand new bag of FL grapefruit in the truck and need to d/c the water hose before it bursts or damages the water hydrant. Moved the fruit into the camper. Almost couldn't turn off the hydrant, barely removed the hose and carried it into our shower to thaw and drain.
Back to sleep another hour or two and it was nineteen degrees outside. Okay, we're leaving anyway. Just wanna dump the tanks 'cause we're going to camp at Deb's parents' house with two-point hookups only. Whoops, can't dump the tanks, the valves are solid froze and I'm not gonna sit in 19 degree morning figuring out how to thaw them. Disconnected the sewer hose and it was too stiff to collapse into the storage tube under the Airstream. I ended up capping it on both ends and carefully throwing it into the bed of the truck.
We ended up gassing up and dumping down at a Flying J in the rv pump section. Very nice setup, we were outta there pretty quick and everything thawed, dumped, and stowed properly.
Prevention is a whole lot easier than the cure. We'll use the fresh water tank instead of the ground hydrant and we'll not leave the waste drain hose out either if the forecast is anything like freezing.