Needing a night time stop on way to Florida

We have left Ontario as late as mid January. Stay in the rig. Flush toilet with Ani freeze. Use bottled water for coffee and drinking. Electric blanket on the bed. We stay in Northern Indiana the first night so not warm. Furnace keeps us cozy. Check for campgrounds open all year. You will find them along the way. We would rather be sleeping in our own bed than a hotel. Travel with 2 dogs who also prefer familiar surroundings. If you have a gel topper be sure to turn on electric blanket way before going to bed. Otherwise you will be sleeping on a bed of ice! Safe travels and have fun.