Chapter Four opens with the sentence,
On Sunday morning...the world and its mistress returned to Gatsby's house and twinkled hilariously on his lawn.
This is a sentence that suggests illicit affairs and lewd behavior. Then, in the list of guests that Nick compiles, there is one mentioned as coming from East Egg, a Clarence Endive; however, he engages "in a fight with a bum named Etty in the garden."Further, names mentioned such as Clyde Cohen and Don S. Scwartze are not the type of names carried by the upperclass, whose surnames in the twenties were WASP names.
Other indications that new money comes to Gatsby's parties is in the behavior of some of the guests; for instance, Benny McClenahan arrives accompagnied by four girls, who so closely resemble one another that it seems as though they have been to West Egg before.