A better place to ask this question is in the
Full-Time RVing forum on this website. For a full-timer it's not very convenient to fill up your fresh water tank every few days to avoid freezing lines. I am in the Washington DC area which surely gets colder than your Georgia location and used heat tape along with foam insulation for my inlet with no problems. I also replaced the rubber hose with PVC and use PVC for my waste connection as well.
If you go to the Full-Time forum the first post you'll see in a sticky in regards to
Winter RV Camping and is well worth your time to read.