People came from far places just to have fun in gatsby's house. in the weekends the house of gatsby was decorated like a circus. at that moment of fun gatsby was hardly seen because everyone yearned to see him.
Markus Zusak needed a narrator who could provide Liesel's point of view, but also provide information that Liesel, as a young girl in a relatively isolated town, wouldn't know about.
I would say the last one but it could also be the second one<span />