Hey there Susan,
Welcome to planDisney and thank you for your question!
My family and I were late adopters to
MagicBand+, but boy were we missing out. I can confirm that your MagicBand+ is usable at both the Disneyland Resort and the Walt Disney World Resort, because we have used ours in both locations multiple times!
We typically purchase
Lightning Lane Multi Pass when we visit the Disneyland Resort, so we love the convenience of being able to use our MagicBand+ to scan into the attraction during our return window. We also love that we can use our MagicBand+ to scan for entry into the parks!
The Walt Disney World Resort has a few additional features as well including the ability to unlock your Disney Resort Hotel room.
Additionally, at both resorts there are fun extras that you can find with your MagicBand+, with my favorite being the
Star Wars: Batuu Bounty Hunters game in
Star Wars: Galaxy's Edge. Make sure to grab your favorite drink from the
Milk Stand to enjoy and download the
Play Disney Parks app to get this experience started.
Thanks again for your question, Susan! I hope you have a wonderful time on your next trip to the Disney Parks.
Have a Magical Day,
Greg