various parts of it, sarah hayward, the ultimate wedding planner extraordinaire. we look at this day, several bits, you've got the abbey, reception one and reception two. who is in the abbey? >> people in the abbey are family, friends, foreign royals and dignitaries and charities, people who must be acknowledged in the setup. >> who gets to go to reception number one, hosted by the queen of buckingham palace? >> close family, close friends and foreign royals. >> a lot of them, 600 of them. >> yes, there are a lot of foreign royals, a lot of royal families throughout europe and there's protocol as to who arrives when, who sits down before the other, so they've got a lot of -- they have a headache organizing that. >> different parties will have a very different feel to them. >> i think the second party, the evening party i think we'll see the couple change.