Blood Orange Margarita
La Cava del Tequila, Mexico, Epcot
Other folks have picked other Margarita flavors and I'm sure they're also fantastic.
The slushies in France are so good they are the exception to my "no frozen drinks" rule. I have one of each every tip nowI'm not a huge fan of sweet drinks and really am more of a beer drinker...BUT--The Gran Marnier slushie is one of the best cocktails I've ever had. On a hot Disney day I seek out frozen drinks (even some non-alcoholic ones) I figure it's for medicinal purposes.
I finally tried Tipsy Ducks in Love (China pavilion) this past weekend, and it was delicious! The combination of ingredients doesn't sound appealing (bourbon, coffee, black tea, cream, and chocolate syrup), but I'm glad I tried it! I'd definitely get it again on a future trip. I also tried the cider flight from the F&G kitchen in the UK - those were pretty tasty!