Hi Linda, welcome to planDisney!
Thank you for bringing your question to us!
I just checked the
Theme Park Reservation Availability Calendar and all reservations for
Park Hopper Tickets starting at
Disneyland Park are fully booked for September 11, 2022. Only reservations for Park Hopper Tickets starting at
Disney California Adventure Park are currently available to book.
My recommendation would be to change your current reservations to start at Disney California Adventure Park and then purchase a Park Hopper Ticket for your grandson also starting at Disney California Adventure Park. Then you can all "hop" over to Disneyland Park at 1:00 p.m. (California time)! But please know that reservations are limited, and there is a chance that the current remaining Park Hopper Ticket reservations for Disney California Adventure Park on September 11, 2022, can, get all booked. I suggest you visit the
Disneyland Resort Main Entrance Ticket Booths as soon as possible and let the Cast Member know the changes you would like to make. They can certainly help you out! Another option is to try calling the
Disneyland Resort Ticket Line at 714-781-4636 and see if the fantastic Cast Members there can help!
Last but not least, did you also by chance purchase the
Disney Genie+ Service add-on? If not, I recommend considering it! Genie+ allows you to access the
Lightning Lane entrances on certain attractions, generally resulting in time savings from having to wait in the standby lines.
If you have any other questions, you know where to find us!
See ya real soon!
Jin