Hello Diane,
Welcome to the Disney Parks Moms Panel! You're going to have so much fun visiting Walt DIsney World! I can tell you from personal experience that you absolutely can have one person make
FastPass+ selections for your entire party at the same time. I actually did this very thing when I traveled as part of a group of 8 earlier this month.
As a first step, you'll want to be sure you have everyone linked together on your
My Family & Friends List. To do that, just go to that
Family & Friends page, click "Add a New Guest" and follow the instructions from there. Once you're all linked together, it will be easy to make the same
FastPass+ selections for everyone in your party. You can either do that online
here or using the
My Disney Experience mobile app. Also, just remember that everyone will also need a valid park ticket linked to their account through
My Disney Experience. I'd recommend having that done, and having everyone linked together, before your 30-day window arrives.
Wishing you pixie-dusted planning and a magical vacation, Diane! Please let us know if you have any other questions as your trip gets closer.
Beth