Hey, I live at Holden Beach,about 8miles from Shallotte NC. About 30miles north of MB SC. Typical year u will have to deal with freezing temps. Usually for only a few days at a time. But no guaranty. I have seen years with temps no lower than 28 or so and I have seen 12 inches of snow and really cold for a week ( very very unusual but could happen ). We have a few people staying at the pier oceanfront during the winter. Don't know what they do for frost protection. About 30 miles n of MB so weather is about the same. I can leave my outside s and b water on 90% of the time if I am home. If we get a cold spell I cut it off and drain it for a few days then turn it on again. Probably could the same with rv if u have some underbelly protection. I winterize s&b ( just cut off water ) and TT if I am not going to be around.