Hi, Kimberly!
The parks absolutely have special events for the Fourth of July! And they are truly spectacular!
We've witnessed special 4th of July Fireworks at both Magic Kingdom Park and Disney's Hollywood Studios. The MK fireworks were so spectacular, we booked our next trip over the 4th of July weekend at Bay Lake Tower (with a Theme Park View) JUST so we could see this display again. It was that amazing.
Last year, Disney Parks Blogs shared some insight about your choices of firework displays at Walt Disney World over the 4th of July holiday. Take special note that the absolutely amazing display at Magic Kingdom took place on both July 3rd AND July 4th. Those fireworks are unlike anything I've ever seen elsewhere. They are so powerful that the finale sets off the alarms in most of the cars in the lot at Bay Lake Tower! Love it!
Assuming that something will take place at similar times this year, you can plan your trip now, adjusting times and locations once this year's festivities are finalized. You'll find 4th of July fun at the WDW resorts, too, with poolside activities taking on a noticeable patriotic flair. No matter what, you'll feel a special celebratory spirit in all of the parks around the 4th of July holiday, so don your most patriotic gear and have fun!
Send more questions when you think of them! I'd love to help!