It's briefly implicated that a man and woman have sex(the man goes on a drug and alcohol binge as a woman in a bra sits in his bed). Several uses of anatomical terms, with insults occasionally being quite vulgar. A pornographic magazine is briefly visible in one scene. Scantily clad women are seen in another scene.

Plenty of swearing, mostly "F**k" and "S**t".

Jack's defining character trait is that he's a "recovering" drug and alcohol addict. He appears high in flashbacks, and in one of those, a bong is seen in a background. He mentions having a cocktail of drugs including mushrooms, heroin, cocaine, LSD and pot, with the resultant trip inspiring one of his more ridiculous casino ideas. Later in a dramatic scene, he relapses, with a bong and bottles of alcohol clearly visible, in addition to cocaine on a table. Before leaving the suite, he snorts a line.

At the end of the film, he smokes a joint.