Hey Howdy Hey Amir and welcome to planDisney!
I really thought Disney was on to something great with the release of
MagicBands. So many things conveniently linked to one little wristband was revolutionary! That is until
Disney MagicMobile Service was released last year. Now you have all the convenience of the MagicBands right from your phone. Your room key, tickets and charging privileges all from a device you are carrying regardless makes things so much easier!
Personally, I still am a sucker for the MagicBands and is my preferred way of navigating the parks. My wife, on the other hand, wanted to give MagicMobile a try with herself and my three girls. She was able to use her phone for herself and their tickets, so yes, you only need one mobile device. Sounds like you already made your Disney MagicMobile passes for everyone that will need them so you should be all set!
Just a reminder, if you get to Walt Disney World and feel that you might want to invest in a MagicBand, you can do so at any time. After your purchase, a Cast Member can help you link it to your account and you can use the MagicBand and MagicMobile pass interchangeably at any point of your vacation. Just another option to make touring the parks that much easier!
Best wishes for the continued planning of your next trip. We cannot wait to welcome you to the Most Magical Place on Earth! Let us know if you have any other questions.
Happy planning,
Nick