Yes, they come with a full size coffee maker, as well as a full size fridge and stove. I always bring my own coffee to WDW and I also bring large styrofoam cups so I can bring a cup with me out to the parks in the morning.
On a side note...if you are looking for a decent cup of coffee in the parks, I think the coffee at the stand outside the ride exit at Tower of Terror and the similiar stand outside of Mouse Gears near Mission Space has pretty good coffee and lattes.