Jay Gatsby gave his nightly parties with an aim of creating an illusion of worth and pomp, both of which were meant for one person only: Daisy. Deep down, Gatsby had low self esteem. He fell in love with Daisy years ago who promptly dumped him for the rich man Tom. It never occurred to Gatsby that Daisy was a gold digger unworthy of him. He saw her as the fruition of his Golden Dream. If he could only reconstruct that Dream, surely she would return to his arms. Gatsby never altered his view either of himself or her. He died still believing in the elusiveness of that Dream. As for Daisy, she lived in her own world of stasis. Life was a carousel of the excesses of that same Dream that afflicted Gatsby, but in her case she played the unwitting fly to Gatsby’s spider. The parties at Gatsby’s mansion were obscene caricatures of the then economic excesses of the post WWI American society. Gatsby orchestrated them to lure Daisy into his web.
In Chapter Six of The Great Gatsby, Daisy attends one of Gatsby's parties. She did it only because she was attracted to the glitter her husband lacked but Gatsby provided. The other party goers were the scum of society. Daisy does not enjoy the party. In fact, she is "offended" by it, especially by the people who are in attendance. Daisy dislikes the fact that so many people "push their way in" to Gatsby's home instead of waiting for an official invite, as is commonly practiced in the East Egg. She finds the West Egg nouveaux riches to be tedious and vulgar, an affront to her "old money" mentality.