. . . completely useless with dew points often approaching 75 degrees or more. Unless of course, you're a shareholder benefiting from the in-park sale of those trinkets.I hate to break it to you, but in the FL humidity, those don't work. Evaporation is what cools you off. If the water and/or your sweat isn't evaporating readily, the addition of extra water won't help. There will be an instantaneous cooling from the ice in the water, but that's really it. After that you're just hot and wet.
I've done a lot of work with evaporative heat transfer, so this is scientific, not just an opinion.