CNN has a general report on wedding events and trends, such as the Dunkin Donuts limited-edition Royal Wedding donut available only from April 24-29. Also a description of the "groom's cake" to be served alongside the couple's official wedding cake. This will be made from McVittie's Rich Tea biscuits. And for a complete discussion and history of Rich Tea biscuits -- "invented in the 17th century for the upper classes as light snack between meals and impregnating the scullery maids" -- see this at the Guardian.
What a coincidence: I have been eating Rich Tea biscuits (though the wrong brand) for a couple of weeks -- I bought them at a grocery store when we were in Ireland. In fact, in Northern Ireland, so they really came from the English realm! I can report that they are not as sweet as American cookies -- in fact, a little tasteless compared to say, Girl Scout cookies. But there you are. The Royal Groom's Cake will contain 1700 of them, as attested by this photo, supposedly:
The best Royal Wedding Kitchen Item is a Royal Wedding Refrigerator (it's a joke from here: What’s not to like?):
Prince William and Kate Middleton - British Royal Wedding 2011 - Lifesize Cardboard Cutout / Standee / Standup