Will any of the royals be present at the London premiere this Friday of excorcism movie with Anthony Hopkin?

I have been hearing with some concern buzz on the net concerning secret excorcisms performed at The Palace either by royals on royals or royals on footmen, or by exorcists on footmen or footmen on royals or royals on exorcists. The details are not clear, but are vivid and disturbing enough to wonder whether the appearance of royal at this fould movie about evil and demotic possesion could perhaps precipitate a relapse by one of the afflicted members of The Palace