Disney Enchantment, Magic Kingdom's current 15-minute fireworks-and-projections display, is colorful but not terribly emotional. It centers on Cinderella Castle. Numerous good views of the action are available, so long as you're standing on the front side of the Castle—get too far off to the side or behind and it loses much of its symmetric and meticulously choreographed visual effect.
The Hub is the most popular place to take it in (stake your place an hour or more ahead if you're keen), but we prefer Main Street, where the structures around you seem to jiggle and dance by way of special projections. You can even hear the soundtrack the show piped in to the ferry to the Ticketing and Transportation Center, the ferry dock, and at the California Grill restaurant atop the Contemporary Resort.