AAA has preferred fireworks viewing near the Tomorrowland Terrace area (where Disney has the fireworks dessert party). The one catch, is that it's not guaranteed...once you book with AAA you do have to make advance reservations to lock in your spot. If you do that, then you just walk up to the viewing area before the fireworks start, show some ID, and enjoy the show. It's nice since you don't have to stake out your spot super early, you just need to remember to reserve well before you leave for your trip.