We live just north of Houston, TX and have a 5th wheel with residential refrigerator with ice maker and a dishwasher. We don't get really cold weather on a regular basis so I don't use the pink antif...
For several nights I would use the furnace or electric heaters to keep at least the rooms with water in pipes warm. if there is water at the tank drains a heat lamp will keep it from freezing and breaking the plastic piping there.