Hello, Cassandra!
I don't know if you've had a chance to look at the sample dinner menu at
Narcoossee's Restaurant at Disney's Grand Floridian Resort & Spa, but looking at that menu just made me hungry!
When you are finished your delicious meal, you'll have no problem hopping onto the monorail (or bus, if you prefer) to Magic Kingdom Park, which is open until 11 p.m. that evening. This means that resort transportation to and from that park will run continuously until around midnight that evening.
If, however, you linger a little longer over your dinner, and that transportation turns back into a pumpkin at the stroke of midnight, a Cast Member would be happy to arrange a cab for you. Be sure to ask a Cast Member that night what time the
resort transportation is scheduled to end, as schedules and park hours are subject to change.
Enjoy that delicious meal, Cassandra! And be sure to send more questions as you think of them; I'd love to help!