From the Official Disney Parks Blog..
It’s easy to participate. Simply visit www.EpcotGardenContest.com and play the new Epcot International Flower & Garden Festival “Grow Your Garden” Instant Win Game for a chance to win a pair of Florida Resident “4-Day Dream Passes.” The tickets offer admission to one Walt Disney World Resort theme park per day for four days and are valid 3/8/10 – 3/26/10 and 4/10/10 – 5/25/10. And no, the four days do not need to be consecutive.
See EpcotGardenContest.com for full details or to try to win.