Hey there, Wendy!
Thanks for stopping in to see us at planDisney! It's great to hear you're helping plan some fabulous Disney dining experiences.
When you have an existing dining reservation, you should be able to use the
My Plans feature in your
My Disney Experience account to make changes to the reservation. You would typically use the "Change Reservation" button first to modify the number of Guests, and then use the "Update Guests" button to select who will be in your dining party.
You can also use the
My Disney Experience mobile app to make the updates. You would tap the "Modify" pencil icon to modify the number of Guests, then tap the "Update Party" link to select who will be in your dining party.
One suggestion I'll offer is to try and make the party size modification using your My Disney Experience mobile app. I have experienced situations where I was able to successfully modify a reservation to add new dining party members using the mobile app even though the website version was displaying errors when trying to make the modification.
One additional note I will add is that if you are trying to update your reservation to remove yourself from the reservation, you would want to call the Walt Disney World Resort dining reservation team to make that modification. You can contact the Walt Disney World Resort dining reservations team by calling (407)-WDW-DINE (407-939-3463).
You can also try to get assistance with your My Disney Experience app through the Walt Disney World Internet Help Desk by calling (407) 939-4357.
Wendy, I'm hopeful that you can get all your dining reservations made successfully.
Enjoy some Disney magic in your day!
Jerry