yes and no.... You can drive there for breakfast, but they will give you a 3 hour parking pass and you will have to move the car after breakfast. We did go to MK after breakfast on the monorail, but we were only staying for a few hours (it was our last day), so we didn't park for longer than the 3 hours.
What I would do is park at TTC and then get the monorail to the Contemporary for breakfast, then you won't need to move the car later
Bev