The long-awaited adaptation of the hit Broadway musical Wicked finally arrives in cinemas today. However, AMC (Cineworld in the US) has issued a stark warning to fans viewing the film this weekend.

Just as talking and looking at your phone are prohibited inside a movie theatre, singing along is now.

A pre-show advisory video screening across the point reads: “At AMC Theaters, silence is golden. No talking. No texting. No singing. No wailing. No flirting. And absolutely no name-calling. Enjoy…