I used a different kind of MistyMate. It is still an actual TM'ed Misty Mate Pump and I got it at Wal Mart for less than $20 (it's been more than a year ago and I think it was about $14.99. The website sells for a higher price than the discount stores). Mine held 24 oz so you don't have to stop and fill it up very often and it has a strap so you can attach it to your belt or backpack or even wear it around your waist and a clip if you want to clip it to your shirt. You can adjust the amount of mist you want too!
http://www.mistymate.com/mmp24.html
This is the website so you can see all the available ones. I. too am a HUGE MistyMate fan. It got me thru a scorching June Disney World trip last year. It is freakin' wonderful!! So light and so efficient! Sometimes, my DH would walk about 2 feet in front of me and hold the mister up and I would walk into the mist. Ahh, delightful! I would not go to WDW without it now. Love that MistyMate!!
We also used this last year at the end of June and we loved it. In fact we picked up another one so that there would be no more fighting over the one like there was last time.
It has a strap so that you can either weat it like a fanny pack or throw it over you shoulder. Sometimes the mist spray comes out a little to fast and creates a big cloud but not one person around us said they minded. In fact most people asked us to keep it going so they could stay cool to.