Hi Brandi:
It sounds like you are going to have a fabulous celebration in a few short weeks! Both your daughters will be able to wear the birthday buttons to celebrate their special day. For your daughter receiving her learner a permit, I have a few suggestions. First, along with a birthday button, pick up an "I'm celebrating" button. These buttons can be personalized, by adding her celebration to the button. Also, if you plan on dining at a Table Service location, be sure to tell the Cast Member that you are celebrating two birthdays during check-in. Although it is not guaranteed, my daughter has received a celebration cupcake in honour of her birthday, and when we have been at character dining experiences, she has received Birthday cards from the characters.
If you would like a "bigger" celebration, I would recommend looking at
Disney Floral & Gifts. They have great gift options that can be delivered to your Walt Disney World Resort for a special surprise. There are gifts that suit almost every budget and if you can't find what you are looking for, there is even an option to build your own gift.
I hope that helps Brandi. If you would like some more ideas, or if you have any other questions, please let me know. I would be happy to assist you in any way I can.
Stephanie