Possible “Kate & William’s Wedding” Doctor Who plots
-Kate is actually an alien (but a good one, sent here to earth on a happy mission)
-Some sinister time-travelling aliens (like the Master) maybe are here to harness the outpouring of goodwill for nefarious purposes; or, similarly, to take advantage of the fact that everyone’s watching the wedding to pull some sort of mass mind control trick.
-The royal family is party to an ancient conspiracy and some important culmination is happening on the wedding day, but it mustn’t be allowed to happen because of some alien’s nefarious plan or some impersonal universal event.
-the Doctor is Kate’s childhood friend and he goes to see the wedding because he’s happy for her, but wacky shenanigans happen and the Doctor must do a ridiculous amount of running, sonicking, etc, to save the day.
-Prince Harry is actually an alien
-Some kind of Booster Gold type plot where the wedding happens completely in the background and there’s a plot about saving a squirrel or something.
-Daleks attack
