The story is set during Christmas, and a Christmas tree can be seen in most scenes. However, the masked orgy is the only setting without a tree, depicting it in stark contrast to the “real” world.
The masked orgy features music from composer Jocelyn Pook, who created a track called “Backwards Priests,” later retitled to “Masked Ball.” It contains samples of a Romanian Orthodox Divine Liturgy played backwards.
Kubrick’s daughter Katharina and his grandson Alex Hobbs appear as the mother and the child patient examined by Bill.
The film’s co-writer Frederic Raphael stated that the proposed titles of the film included You and Me and The Female Subject. Kubrick personally chose Eyes Wide Shut.
The identity of the “Red Cloak” figure (played by Leon Vitali) is never revealed, but the actor’s real name is cited in the newspaper article about Mandy/Amanda’s death, stating: “After being hired for a series of magazine ads for London fashion designer Leon Vitali, rumors began circulating of an affair between the two. Soon after her hiring, Vitali empire insiders were reporting that their boss adored Curran — not for how she wore his stunning clothes in public, but for how she wowed him by taking them off in private, seductive solo performances.