That depends on the depth and duration of the freeze...
Will you have the propane furnace running and electricity ?
otherwise I would winterize to be sure... (and if your temps are like ours this morning, 23 in DFW!, you are probably asking that question too late
)
We have the heated hose too, and a "four season" package, but ours did freeze last year. The water lines and all can 'give' a bit, but the fixtures and water manifolds usually do not have any expansion space and that's where you will run into issues...