Hi Ray! Happy to assist here again.
I wish I had a quick way to adjust your birth date since mistakes do happen. You can see your birth date information under "My Disneyland" by selecting "Profile." By clicking "Account Settings," you'll see that you can change most settings yourself, except for your birthday. To make this adjustment, you'll need to speak with a helpful Cast Member at
Guest Services by calling the phone line. They can make this change for you and I expect it won't take too much of your time.
Since you're planning a visit during the Halloween season, I'd suggest keeping your eyes open for an announcement this time next year of the return of the
Oogie Boogie Bash - A Disney Halloween Party at Disney California Adventure Park. It's an extra special ticketed event, where Guests can wear
costumes and trick or treat. Plus, there is a festive parade, shows, Character Experiences, and more. It's not scary and suited for all ages. I think your family would really enjoy it!
Have a spooky good time.
Elizabeth