Standard&Poor's Ratings Services has affirmed its 'AA' long-term rating and underlying rating (SPUR) on Orange County, Fla.'s sales tax revenue debt. The first-lien pledge on the county's apportionment of the half-cent sales tax secures the bonds. The sales tax is levied on various items, including tangible personal property sold at retail, with exemptions for general groceries, medical products, and professional services. Orange County is located in central Florida with an estimated population of approximately 1.1 million. The county seat, Orlando, is a premier domestic and international tourist destination and includes Walt Disney World, Sea World, Universal Studios, and other metropolitan area attractions. The expansion of Walt Disney World and Universal Studios and additions to Orlando's massive and well