Seeing as how the underbelly is not enclosed it is always risky, as long as it is not a hard freeze and the water will not sit in the lines for an extended time you should be fine... just be sure to re-winterize promptly after your trip. If you can locate any water lines you can also add pipe insulation to assist in thermal protection from freeze. I hunt into late november here up north and you can always dump some cheap RV anti freeze in your holding tanks to keep them from freezing also, thats a very important step. Keep the inside temps at least around 50-55 with furnace or electric heaters and you will be just fine, remember the lines are mostly inside the camper