Not sure if this counts, but the frozen lattes at the Main St. Bakery in MK is so good!
I also like the pressed coffee at AKL & I've heard great things about the Kona coffee.
WDW is known for not having a terrific coffee selection (Nescafe

)....but if you are in Epcot or the BW area and hard up for a good cup,
I heard (but am not positive) that there is a actually a Starbucks in the Swan/Dolphin hotels!