It's that time of year, y'all: the mercury is risin' in FL and it's going to start staying there! So, we've got lots of new folks here on the boards. Let's get your tips and tricks for staying cool and refreshed while you're visiting hot hot hot WDW!
First and foremost, stay hydrated. I'm not talking about taking a "pub crawl" around World Showcase. Drink plenty of water.
Take time out of the sun by going to the indoor attractions - Hall of Presidents, The American Adventure and Carousel of Progress.
If you've gone a little too much on the overdone side grab a shaved ice! You can order them with all sorts of syrup, but I like them plain. Eating it will help to cool you down from the inside out 
If you're at Epcot, head to one of the movies, or the Universe of Energy to spend some time in the a/c!
WATER!! Also, wear short shorts and a tank top and flip flops. Also, if you're a girl, put your hair in a ponytail.
From living in FL, I've learned you never really get used to the heat! ugh
Disney lover, dancer, cheerleader, and vegetarian.
"Keep Adventuring and Stay Not a Grown Up"
Wear some kind of hat!
Frozen Cappuccino!
Frequent the indoor stuffs intermittently!
Take an afternoon break at the pool during peak heat times - between 2-4 for us!
DRINK LOTS OF WATER! Joe and I Went through 3 12-packs of the larger bottles while we were there.
Exactly all those things! Water water water as a habit. Don't wait until you're thirsty. Take a break in the heat of the day, drink water, and eat lightly!
Hats are a great tip, light colored hats, though. And light colored clothing can help, too. Darks just suck in the heat.
I also like to have a bandana with me. I can wet it and then wear it around my neck, or use it to cool my face.
Take every chance to get some shade, and did I say to drink Lots of Water? 
If more of us valued food and cheer and song above hoarded gold, it would be a merrier world.
J. R. R. Tolkien
Dolewhip!!!
Dolewhip!!!
YES!
i have never done this at disney but i frequent summer music festivals every year. Often there is no release from the heat. I started freezing a couple water bottles and wrapping a towel around them. The waters melt throughout the day so you can drink them and the towel is like a little AC when you need it. just wrap it around your shoulders to protect from the sun and cool you off.
Rehydration sachets are brilliant if you stay to feel dehydrated.
Wet flannels and store them in the fridge, when you go out pop them in a zip lock bag. They stay cold for quite a while and are perfect for the neck/shoulders/head!
Saloca in Wonderland <--- blog!
hats are a great idea.
I'm bringing a handful of those ice packs that you pop and the chemicals mix and make it cold just incase my boyfriend gets too hot, it is the easiest way to cool him down quickly.
Yes to all the above, but I also enjoy just embracing the ten minute rainfalls. After about another ten minutes in the sun, you will be dry anyway.
