Final answer:
Percy's response reveals his inner thoughts and feelings, providing insight into his perspective and the social norms within the narrative's present-day setting.
Step-by-step explanation:
Percy's response tells readers about his inner thoughts and feelings. His description of the 'moving-picture fella' who is not accustomed to the social etiquette of the elite but has experience with 'an unlimited amount of money' reveals the casual and somewhat critical way Percy views others.
Furthermore, the mention of August and the impending return to school suggests that the novel takes place in the present of the narrative, which affects the language, atmosphere, or social circumstances of the novel by giving it a contemporary feeling with current societal norms and expectations.