Prince William and Kate Middleton are cautious after a Caribbean trip backlash.

Royal editor Emily Nash discussed their future roles.

William is modern and aware of future changes.

Kate is conscious of their responsibilities.

Their actions are carefully managed to avoid mistakes.

The couple faced criticism for their Caribbean tour.

The trip cost the British public $274,000.

They were attacked for promoting the monarchy and tour PR mistakes.

People said they looked like they were on a colonial visit when they posed in a Land Rover.