Kate has a secret code phrase to calm her children, which apparently works every time.
George may have a role during the ceremony, but it will likely be low-key due to his young age.
William and Kate want to avoid overwhelming George with attention during the ceremony.
Louis did not attend the late Queen's funeral as he was too young.
Louis stuck his tongue out at Kate during the Platinum Jubilee, and Kate used her secret code phrase to calm him.