GayDayS.com -- "Gay Days began in 1991 as a single designated day (always the first Saturday in June) when the LesBiGay community and friends were encouraged to "Wear Red and Be Seen" while visiting the world’s most popular theme park. From it’s beginnings (spearheaded by the GLBT Community Center, local activists, businesses, and the online friends and users of Compu-Who) with 3,000 attendees, this one-day park visit has evolved into a week long, citywide celebration offering round the clock activities including multiple theme park visits, cocktail soirees, concerts, and a host of internationally renowned parties."
Gay Days at Walt Disney World (Wikipedia)