Hi there, Leia! Welcome to planDisney!
It looks like you've done your homework! And yes, you are absolutely right about
Disney+ Day on September 8, 2022. If you're a
Disney+ subscriber which, let's face it, we all should be, you will enjoy a little extra pixie dust on that day in the parks.
As a Disney+ subscriber, you will enjoy access to both
Disneyland Park and
Disney California Adventure Park up to 30 minutes early. Ka-Chow! Additionally, if you're staying at a
Disneyland Resort Hotel, you'll be offered access to the parks 60 minutes before regular opening time. Keep in mind that you will still need valid park tickets and
theme park reservations to enter. You will also need to show proof of your Disney+ subscription. I find that the best way to do this is through the
Disneyland Mobile App. Tap the menu button in the bottom right corner, then select "My Profile." Click "Memberships and Passes." This page will show all memberships and affiliations associated with your Disney account, including your Disney+ subscription.
The magic doesn't end with early theme park entry, Leia! In celebration of Disney+ day, you will also receive free
PhotoPass downloads at the theme parks. If you look hard, you may even find ways to "plus" your pictures! This is a celebration of "all things blue," so don't be surprised if you see some blue treats, special effects lighting and blue beverages everywhere you look! I happened to visit a Disney Park on the other coast during Disney+ day last year and was delighted to find magical surprises all around the park. It'll be a perfect day to bank some core memories!
I hope you have an excellent day at The Happiest Place on Earth, Leia! And remember..
"It's good to be blue!"
Ashley