Once you're on site, you'll know it and you can follow the purple signs. The signs on property are pretty good and if you just follow them to The Magic Kingdom or the Magic Kingdom "resort area" you'll get there easily. I'm sure someone else will come along with some more detailed help, but the signs are everywhere on property and they will lead you to any where you need to go.
But when are your reservations and where do you plan on being before your reservation? What are you doing after? Where are you staying? A car may not be the best answer depending on your answers to those questions.
When we eat at Chef Mickey's we spend the day at MK, park in the MK parking, and walk or monorail over to the Contemporary. Walking is usually faster than the monorail, in our experiences.