If we are going to be gone all day I roll up the awning, turn off the water if we have hookups or turn off the water pump if no hookups. We only turn the water heater on if we are going to need it. If we are using an electric heater we unplug it. If we are using the furnace, very rare, we turn it off. Usually we would turn the AC off.
If we were away for more than a day we would turn everything off. We don't winter camp.