Cold nights in Branson

We had a similar 5th wheel, an Everest. Used it a few times in the sub-freezing cold of west Texas. The front cap was a sheet of of ice. As long as you're in it and using it you won't have any worries. Just be prepared to use a bunch of propane so keep an eye on that. I doubt you will be using the park's water as the line may be frozen so have plenty of internal water. Do you have an electric fireplace, ours works pretty well. Additional heaters will also help. These trailers aren't really meant for such cold temps but sometimes we get caught them and they do a fair job.