So sorry you're having trouble handling the heat. June just seems awful around here, I think because May is usually so nice, but as soon at the calendar rolls over to June, the humidity rolls in, and it can be miserable.
I do wonder if the mister fans actually make things worse, since you would instantly feel hot again when you turn them off. I prefer swabbing my face and back of the neck with a cold wet cloth occasionally.
My advice is HATS HATS HATS, sunglasses, putting your hair up off your neck (I pull mine through a ball cap or use a headband), wearing t-shirts rather then tank tops (to avoid burning), and drinking water like crazy. Save your bottles and refill them at the water fountains, or get complimentary ice water at any counter service location. Put sunscreen on your feet if you are wearing open shoes. And the back of your neck to your collar. Forget the hair and makeup, it's pointless (I do wonder at the hair and makeup threads around here.)
Get up early to do rope drop, spend the afternoon at the pool and return in the evening. That works some, but June seems to have some very hot nights too.
I hope you have a great time, despite the heat!