Gatsby-themed parties are popping up around the country, in somewhat misguided homage to the over-the-top shindigs Gatsby held at his West Egg mansion. These parties were all-weekend affairs, filled with luxury accoutrements: live music, gourmet meals, free-flowing liquor. One over-the-top party, yes. But an over-the-top party every weekend? In the summer ofwhen The Great Gatsby is set, Prohibition was only two and a half years old. The Volstead Actwhich officially prohibited the selling and manufacture of alcoholic drinks, was passed in late October,