Hello Melissa and welcome back to the Disney Parks Moms Panel!
In my opinion, arriving before Park opening at any Disney Park is a great idea. The
Magic Kingdom parking lot opens about 2 hours before the listed park opening time, and you will be allowed to enter the Park one hour before the official opening time. I recommend planning to arrive at the gate 90 minutes before the published opening time. This will help ensure a lower-stress morning and a peaceful walk down Main Street, U.S.A. You might even have time to grab a Starbucks at the
Main Street Bakery before heading toward the Castle. In my experience, the opening ceremony,
Let the Magic Begin, kicks off in front of Cinderella Castle about 5 minutes before park opening time.
I hope you have the most magical of days at the Magic Kingdom- say hi to Mickey for me!
See ya real soon,
Anne