The sequence of events leading up to and occurring at the party define and contrast the various characters in The Great Gatsby. Nick’s reserved nature and indecisiveness show in the fact that though he feels morally repelled by the vulgarity and tastelessness of the party, he is too fascinated by it to leave. This contradiction suggests the ambivalence that he feels toward the Buchanans, Gatsby, and the East Coast in general. The party also underscores Tom’s hypocrisy and lack of restraint: he feels no guilt for betraying Daisy with Myrtle, but he feels compelled to keep Myrtle in her place. Tom emerges in this section as a boorish bully who uses his social status and physical strength to dominate those around him—he subtly taunts Wilson while having an affair with his wife, experiences no guilt for his immoral behavior, and does not hesitate to lash out violently in order to preserve his authority over Myrtle. Wilson stands in stark contrast, a handsome and morally upright man who lacks money, privilege, and vitality.
Fitzgerald also uses the party scene to continue building an aura of mystery and excitement around Gatsby, who has yet to make a full appearance in the novel. Here, Gatsby emerges as a mysterious subject of gossip. He is extremely well known, but no one seems to have any verifiable information about him. The ridiculous rumor Catherine spreads shows the extent of the public’s curiosity about him, rendering him more intriguing to both the other characters in the novel and the reader.