Hello Ashleigh!
Thanks so much for stopping by the Disney Parks Moms Panel. I hope you are having a magical week.
You are correct, when you arrive at the parks and go to your first
PhotoPass+ location, a cast member will take your photos and hand you a card with a scanable code on the back. You can keep that card to give cast members as you go to attractions and other photo opportunity places like Character Meet and Greets. Make sure you hang on to the card throughout your trip so you can scan it into the
Disneyland Mobile App, or to enter online. If you forget your card, you can get another one at any of the photo locations, but if you lose the cards it is harder to retrieve your photos.
At certain attractions there may be a code or series of numbers/letters on your individual attraction photos that you would need to write down and enter manually into the app or online to gain access to those photos as well.
I hope this helps and let me know if you have any other questions as you plan your visit!
See you real soon!
-Emily