The Great Gatsby by F. Scott Fitzgerald Chapter 3 Page 5

A momentary hush; the orchestra leader varies his rhythm obligingly for her and there is a burst of chatter as the erroneous news goes around that she is Gilda Gray's understudy from the “Follies.” The party has begun.

I believe that on the first night I went to Gatsby's house I was one of the few guests who had actually been invited. People were not invited — they went there. They got into automobiles which bore them out to Long Island and somehow they ended up at Gatsby's door. Once there they were introduced by somebody who knew Gatsby and after that they conducted themselves according to the rules of behavior associated with amusement parks. Sometimes they came and went without having met Gatsby at all, came for the party with a simplicity of heart that was its own ticket of admission.