i thought the he was talking about his RV since he mentioned (2) different locations, and he mentioned "turbokool" which is an RV cooler
while all the info about humidity is correct
the water softer debate is probably out the window
along with the BIG BOX multi cubic foot evaporation units that can be used on stationary buildings
I HAD a turbo kool in my first class A, used it here in calif
it used a lot of water to cool that 23ft MH
if your going boon docking, gasoline for the genny with roof top A/C is a better option than refilling your water water tank everyday or two
you could probably do it for a weekend, but not for a week or more