As details about William and Kate's wedding emerge, we know the couple, their families, and a cadre of royal planners are busy trying to ensure every movement will go flawlessly. "They plan for nothing to go wrong," says Dickie Arbiter, former press secretary to Queen Elizabeth. Now, in my experience that doesn't mean something won't go wrong, but we can rest assured that tradition, pomp, and circumstance will dominate much of the day.