"American Idol" contestant Constantine Maroulis is the grand marshal for the 25th annual cavalcade through downtown Orlando, which features floats bedecked with more than 100,000 pieces of oranges, grapefruits and tangerines. Some 50 entries are slated to participate, including 13 marching bands (those from Capital One Bowl rivals Auburn and Wisconsin among them), as well as units representing Orlando-area theme parks. Paul Kennedy, Jane Robelot and Miss America 2004 Ericka Dunlap report.