Disney has notified the surrounding communities that fireworks testing will be conducted overnight at the Magic Kingdom tomorrow, April 7.

The notice reads, “We will be conducting some routine fireworks testing around Magic Kingdom Park this Thursday night, April 7, between 11 p.m. and midnight. We will do our best to keep noise at a minimum and apologize to our neighbors and Guests for this late-night inconvenience.”
Disney states it is routine testing only and no changes to the current fireworks have been announced. In 2021, late-night fireworks testing was conducted several times in advance of the premiere of Disney Enchantment.
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Maybe they’re testing something in relation to the surprisingly high number of fire reports/incidents everyone says might be firework malfunctions.