Anyone's wedding day is incredibly stressful. While sorting guest lists and tables is enough of a headache in itself, it gets a lot more complicated if several of the attendees are well-known celebrities or officials who have hectic schedules of their own.
Adding that to the fact that your wedding will be broadcast to millions of people all over the world, it is vital the day goes off without a hitch.
When Princess Elizabeth married Lieutenant Philip Mountbatten on November 20, 1947, the ceremony itself ran very smoothly but there were two disasters that happened hours before that could have derailed the entire day.
