I hate the zero sugar stuff (even though I'm diabetic...if I'm sweating that much, I need the sugar too). I found that Nuun tablets are pretty good electrolyte replacer and they're very easy to pack. I think I found liquid IV on sale at Costco before we left for our trip. I still have some from that trip that will be making it back to WDW in Aug!

I'm going to get a
UV umbrella this year (trying to figure out how to attach. one to my mom's
scooter). The cooling towels worked great as did the little fan!