almost every frikkin' cat we moored next to has the gen runnin' all night long. Finding a secluded anchorage is hard down there, it is possible and that is our preference.
People require A/C....and the charter companies give it to'em. I guess it is just a mind set, as our needs are pretty basic, I see A/C as a negative to the whole experience.....need to cool off, jump in the water.