Leaving rig unattended with propane reefer on?

I also start mine up the night before. I freeze a gallon of water and stick that in the fridge when starting it along with 2 ice packs in the freezer as it will help cool it down and then I have really cold water to drink. I use the freezie packs in a small cooler, fill with beer, sit by the fire. I have solar panels that keep the batteries topped off when in the storage yard as well.