I'm glad to see so many other morning Diet Coke drinkers. When at home, I stop at McD's most mornings on my way to work and get a large Diet Coke to last through lunch.
Coffee most mornings.
Water, too.
Juice when I go out for breakfast which is really rare....
At WDW, I can't do hot coffee when we go in the summer, but sometimes I'll get the frozen cappuccino....mmmmm, so good! Now if there was iced coffee, that'd be a different story. I believe I can get "good" iced coffee drinks at the coffee bar in the Polynesian and since we're staying there, I may stray that way some of my mornings.
At Home: usually water and lemonade
At Disney: Coke....I would never consider drinking coke with breakfast at home but for some reason at disney it doesnt phase me at all...it's those dang refillable mugs