The 14th Century keep was made famous as Castle Anthrax in the 1975 classic film Monty Python and the Holy Grail.
Tickets have been restricted to 500 for the event near Stirling, which sees fans taking to the castle's battlements to enact scenes from the famous film.
Aficionados will also have the chance to take part in the coconut conga or the Python Idle talent contest. (BBC)






























