Howdy Mark! Great question!
You will be contacted if you will be part of the Magic Band testing. I believe, based on your place of residence, that if you are selected to participate in the testing, you will pick up your Magic Bands when you check-in at your Resort.
I have experienced similar circumstances with some of my reservations not showing up on My Disney Experience. I would suggest that you contact
My Disney Experience at phone number (407) 939-7765. Give the Cast Member the details of your reservation and they will be able to assist you further.
MyMagic+ is such an exciting enhancement for Disney Guests!! Thanks for your question and please let me know if you need any further information as you plan your vacation. I see that you will be visiting Walt Disney World Resort in December of this year. With over two months before your check-in date, stay tuned to be sure you have the most recent updates regarding Magic Band testing and MyMagic+.
Thanks Mark and have a magical day!!