a royal wedding it's all predecide and basically it's a networking business venture. you know, the royal family invite people that you wouldn't necessarily know. the royal family invite people you wouldn't necessarily know. why would they know a king or whatever. >> reporter: there will be many old friends in attendance and former flames. there are tickets for william's ex-girlfriends including jecka craig, his first love and arabella musgrave and some young men said to have been close to kate in the past. then invitations for kate's parents and of course the queen. >> who would have thought she had that many friends. i assume it's because the queen is on facebook. maybe she's been poking people. >> reporter: in a few weeks all will attend perhaps the hottest party of their lives. william and kate are said to be erecting a nightclub inside buckingham palace for a royal knees-up after the ceremony. only the most privileged will get to see it. now, guests at the evening