Or short story, running a camper AC, even in "mild" summer conditions is a very expensive and/or finicky adventure.
Trying to do the same in very high temperature and humidity conditions is like peeing into the box fan that you're standing in front of trying to extract the last bit of cool air before your batteries go dead. Wholly unproductive and adding the insult part (wet shoes and pant legs) to the injury part (dead batteries and no chance of re-charging them sufficiently based on the power of the sun).