Congrats on your new camper. Yes, you can enjoy it over the cold months just as you can in the warm months. You just have to approach it with no running water, much like tent camping, only you have a soft bed, a television, and heat! Have fun. Buy a port-a-potty from WallMart you can put in the bathroom. That way you won't have to run inside the house to "go" in the middle of the night. In the morning, dump down the porcelain throne in the house, rinse, and get it ready for the next night. We sleep in the camper almost every night, until outside temps get around 10 degrees. Then it's just too much to heat it.
Congrats again!