First, check your operator's manual to see what is required. Next Camping World uses a check list to winterize RV's. Review that list to see what might need to be reconnected, such as connections to the water pump,or possibly the ice maker if your refrigerator is so equipped. They will drain the water heater and may leave the drain open. I think that Camping World would be happy to provide the de-winterization checklist.
2007 Dutch Star 4320
2010 Mazda Miata 6 speed