Where we go camping, we never use AC neither. Higher elevation has pretty chilly nights, when at day heat we dive into lake.
But still remember on my travels years ago, we stop our 32' motorhome at Nevada casino. Coach had awning over each window, so some extra shade, yet 2 AC running 24 hr would still allow 85F interior in the afternoon.
The So wall was too hot to touch.
I bought my Honda3000EU about 10 years ago. It come with factory defect, that would run at lower load, but would trip overload with AC.
After the repair it runs flawlessly and since our 15k AC was drawing 8.X amp, I could use small micro oven at the same time.