The queen gave William and George special permission to fly together.
The monarch must give her approval for two heirs to travel by air together, an event that's typically avoided.
And they flew commercial.
Will, Kate, and George traveled the 20-plus hours from London to Australia by a scheduled commercial flight — first class was reserved for them and their entourage, of course. Could you imagine being on the flight? For flights in and around Australia and New Zealand, they are using the royal air force. So when Kate stepped off that flight in red, she was not freshening up in a commercial airline bathroom, since that flight was chartered by the air force.