Hello Patricia!
It is a pleasure to welcome you back to the Disney Parks Moms Panel.
Last year my family and I stayed at
Disney’s Art of Animation Resort, and we also had early morning dining reservations at Magic Kingdom Park. I recommend taking a taxi. To get from your Disney resort hotel to Magic Kingdom Park using Disney Transportation you need to
take the bus headed for the park, but they only start running 45 minutes prior to park opening. By taking a taxi you won’t have to leave so early, and will arrive faster. They drop you off at park entrance.
I suggest arriving at Magic Kingdom Park at least 30 minutes before your reservation. You will find Cast Members at the left side of park entrance checking confirmation numbers for Guests with early appointments and reservations, so have that with you. Once they let you in you can relax and enjoy a nice walk to
Be Our Guest Restaurant with a practically empty Main Street U.S.A.
I hope this helps you while planning, and that you have a magical breakfast at Be Our Guest Restaurant.
Thiana