Zip-a-Dee-Doo-Dah, Deirdre! I think you’re in for a wonderful day!
Extra Magic Hours are the absolute best way to start your morning, in my opinion. There’s nothing like a coffee and Fresh Fruit Waffle before a spin on The Haunted Mansion to start my day!
You are correct, if Extra Magic Hours begin at 7:00am, then the welcome show, “Let the Magic Begin” will start at about 6:50am on the Cinderella Castle Forecourt Stage. Guests should be able to enter the park just after 6:00am, so I hope you’ve gotten more beauty sleep than Aurora; it will be an early morning! During Extra Magic Hours, and the time beforehand (where you will be able to roam Main Street, U.S.A.) only guests staying at a Walt Disney World Resort Hotel will be able to enter the park. Off-property guests will be able to enter when the park opens to regular guests at 8:00am that day (or that particular week!).
If I can help any more for your upcoming vacation, please let me know. I hope Mr. Bluebird is sitting on your shoulder! ~ Lindsey P.