Hi Olivia, welcome back to planDisney!
It looks like you have one of the first reservations of the day for your breakfast at
Chef Mickey's! What a fun way to start your day! You should have no problem parking at the Transportation and Ticket Center (TTC). However,
Walt Disney World Monorail Transportation and
ferryboats begin their transportation to Magic Kingdom Park about 30-45 minutes before the park opens. I checked the
Hours and Events Calendar for the first 5 days of your arrival and early entry begins at 8:30 am. Therefore, if you park at the Transportation and Ticket Center, you may be late for your breakfast reservation.
A better option for you would be to park at
Disney's Contemporary Resort. Security may give you a complimentary 3-hour parking pass when checking in at the parking gate which is plenty of time to enjoy your breakfast and perhaps check out the gift shops at the resort hotel. If you plan on going to Magic Kingdom Park afterward, you could always move your car to the Transportation and Ticket Center as theme park transportation should be up and running by then.
I hope you find this information helpful. Please let us know if there is anything further we can assist you with.
Have a magical vacation, Olivia!
Diane