Hey Mary Ann, we're so happy to have you visit with the Disney Parks Moms Panel!
To enter any of the theme parks, guests must have a theme park ticket. So if you want to view the fireworks from inside of the Magic Kingdom each member of your family will be required to have a ticket to enter.
If you don't want to use one of your park tickets, I would suggest to watch
Happily Ever After any of the Monorail resorts. Disney's Grand Floridian Resort and Spa and Disney's Polynesian Village Resort have beach areas that allow guests to see the fireworks and also hear the accompanying music. From your resort just hop on the Magic Kingdom bus and then ride the Monorail or ferry to either of these locations.
You may even want to enjoy dinner at
Narcoossee's or
California Grill that night to get the perfect view of the fireworks atop Cinderella Castle!
Mary Ann, enjoy your time at Walt Disney World!
Wishing you magic and memories!
Korliss