I expect Princess Victoria gets written permission to leave, since otherwise she risks someone else trying to disrupt the succession by accusing her of not getting permission.
As an example, plenty of people in the UK don't much like Prince Charles, but there's nothing we can do other than campaign for the end of the monarchy.
As an example, plenty of people in the UK don't much like Prince Charles, but there's nothing we can do other than campaign for the end of the monarchy.