Hi Nubia,
I am sooooo excited for you. Disney World is a million times better than you can even imagine! Yes, you will have the opportunity to enjoy nightly fireworks depending on what park you are in.
Epcot features Illuminations, which is a breath-taking display of lights, lasers, fireworks and music which tells a beautiful story about the world we live in. It is shown nightly at 9pm on the World Showcase lagoon and can be enjoyed from anywhere around the lagoon. It is always best to try and position yourself away from an overhead tree but otherwise anywhere along the World Showcase will offer a great spot.
Magic Kingdom's firework show is called Wishes and is typically featured every night at 10pm over Cinderella Castle. The show is a great story of dreams and wishes and is narrated by Jiminy Cricket. If you are near the Castle at the start of the show be sure to keep an eye out for Tinkerbell, who helps get the show started. While most of these fireworks can be seen from a number of spots throughout the park, the best location for viewing these are on Main Street or near the Castle. There is also a great view from the bridge near Splash Mountain or Fantasyland near the Mad Hatter Tea Party.
The shows are subject to change and are dependant upon weather but you can confirm times on any of the park maps or the Disney information channel in your resort room. Park hours and firework schedules are also listed
here around three months in advance.
Have an amazing time!