Hey there, hi there, ho there, Jason!
Thanks for stopping by planDisney with your question! It’s wonderful that you’re celebrating a birthday during your upcoming visit to the Happiest Place on Earth. You’re already prepared to make it a magical one because you’ve added a
Mickey Mouse Celebration Cake to the party! I’ll be happy to help you navigate this.
If you’re unable to modify the cake order online or within the Disneyland
mobile app, you will need a different approach. Once you arrive at the park on the day of your reservation, I recommend stopping by the restaurant to speak with a Cast Member at the host podium about moving the cake order to your alternate reservation. They will do their best to accommodate you!
Bonus Tip: Kick off the celebration with some extra pixie dust by grabbing free buttons for the entire party! The special Guest would receive a “Happy Birthday” button with their name, and everyone else can get a “Celebrating” button that highlights the special Guest. In Disneyland Park, they can be found at City Hall. In Disney California Adventure, you can grab one at Guest Services.
Jason, I hope this information was helpful and that you all enjoy the most magical birthday celebration during your vacation! If you have any other planning questions, please come back and visit us here at planDisney.
Sending you faith, trust, and pixie dust,
Karmeen