Nods to The Shining and Misery
Whether intentional or not, I couldn't help but notice two scenes that gave a shout out to Jack and Kathy's most popular characters from other films...
Early in the movie Warren sits at a bar by himself and resembles Jack Torrance speaking to Lloyd the bartender.
Later in the film, Roberta feeds Warren soup, the same as Annie Wilkes did to Paul Sheldon.