Hello Alisa and thank you for bringing such a great question to the Disney Parks Moms Panel.
I can imagine just how excited your darling little princess must be about wearing her beautiful new Cinderella gown to attend breakfast at
Cinderella's Royal Table; it really is
the most magical way to begin your Disney day.
As a Mum of course I can understand completely that you don't want your daughter to be encumbered by her regal attire
all day long. May I suggest placing the gown plus any other princess accessories into a
Rental Locker while you are enjoying the Magic Kingdom Theme Park for the rest of the day. Lockers are conveniently located at the Theme Park entrance.
Lockers are so practical as they're multi-return; so if needs be you can return any time with Disney Park merchandise or souvenirs purchased throughout the day.
If I can be of any further help to you in planning your upcoming Walt Disney World Resort vacation please don't hesitate to come back and ask me another question, I'm always happy to help.
Have great Disney day.
- Jane