Hi, Lisa!
I can't think of a better way to spend your special day than at Walt Disney World® Resort! It's what I did for my 40th birthday, too.
Be Our Guest Restaurant in Disney's Magic Kingdom Theme Park is also the perfect place to celebrate! You're going to feel like a princess dining in Beast's Castle; be sure you notate it is your birthday on your reservation! And don't forget to ask for a Happy Birthday Button when you enter the park that day! These complementary buttons will let everyone know it is your special day - Cast Members love recognizing birthday guests.
It will not cost you anything extra to see
Happily Ever After, Magic Kingdom's nighttime fireworks spectacular. Being able to see the fireworks is included in your theme park admission! If you're spending the day at Magic Kingdom and dining at Be Our Guest Restaurant (which requires theme park admission), you'll already be able to see this fantastic show right in front of Cinderella Castle!
The only "extra" cost involved for fireworks would be if you booked one of the
Fireworks Dessert Parties available. These "parties" offer reserved viewing locations and a dessert buffet, but you do not need to book a dessert party to see the show. All guests have access to the castle hub and Main Street USA for that perfect spot to watch.
I hope this helps, Lisa! Please do not hesitate to let me know if you have any additional questions. I am here to help you plan the perfect day.
Faith