The parks (except AK) will stay open until either 1:00 a.m. or 2:00 a.m. There is a spectucular fireworks display at midnight. They may also have "regular" fireworks earlier in the evening at Epcot and MK. MGM usually brings back Sorcerer in the Sky for NYE. Pleasure Island has fireworks also but this is a special ticket party. Usually they will have a some sort of package and a "name" band.