Hi Colleen!
Oooh, your trip is just DAYS away! I'm so jealous!
Well, you have some great fireworks awaiting you--there is a special Summer Nightastic June 6-August 14 at Magic Kingdom. It is taking the place of Wishes which is an absolutely fabulous fireworks show. So, I know Summer Nightastic will be just as amazing. Disney Mom, Suzannah has
answered another question about the Summer Nightastic which will give you more great info!
The other fireworks show that is a must see is Illuminations at Epcot. It is part fire show, fireworks, water show and breathtaking video of our great world. Fantastmic is a character, water, live action show with a few fireworks in it and plays at Hollywood Studios.
To check the exact times just click PARKS on the Disney World website, then scroll down to the park you'd like to look up (ie Magic Kingdom for Summer Nightastic, Epcot for Illuminations) and click CALENDAR. Then you'll be able to click to the exact date to see what shows are playing when. Of course, I'd check as soon as I get to the parks to make sure the times haven't changed!