I thought the idea was to just get a nights sleep and move on. I can see A/C being an issue during the summer. But showers and coffee can all be done if you really want to. The stove,water heater and water pump will all work for an over night even without electric.
On the other hand one of the reasons I have a built in genset is for the convenience.I always travel with a full fresh tank.
Being self contained at all times gives us lots of options and flexibility.
Having electric at the push of a button makes a huge difference.