My son was married in EPCOT the first weekend in May 2014. Unfortunately, the garden wedding had to be moved to the American Pavillon due to heavy rain. Other than the day of the wedding, our weather was beautiful. It was warm, but not stifling. The parks were busy but we were able to ride everything we wanted plus see many of the shows we had missed in the past. Our accommodations at the Beach Club were discounted as members of the wedding party, but I believe there should be some deals available for that time. Other awesome experts on this board can speak to costs far better than I. Highly recommend a Disney trip in May especially to enjoy the gorgeous Flower and Garden Festival at EPCOT.