We are from Maryland. Our first winter with a tt, we winterized three times. We winter camp. The second year, we said, "Screw it." We drained everything, opened up the faucets and left it at that. Winter camped three times and re-emptied three times, no problem. The third year, we said, "Screw it!" and didn't winterize before we went to Florida for a couple of weeks in January. When we got back, we drained everything and dumped some anti-freeze in the toilet. Everything was fine. This year, we actually winterized in November and de-winterized in January to go fulltime. Still no problems... Maybe we are just very lucky.