Hi, Natasha!
Thanks for reaching out to the Disney Parks Moms Panel!
It's not easy to see Epcot's
IllumiNations: Reflections of Earth show from outside the park since it is
in a lake and surrounded by the World Showcase. You can sit on the beach near Disney's Beach Club or Disney's Yacht Club and see the big bursts of fireworks during the beginning and end portions of the show, but it's tough to see it all. You can see a little wider view of the fireworks portions from Disney's BoardWalk.
It's a little different with the
Star Wars: A Galactic Spectacular show at Hollywood Studios. I have watched the show from the Beach Club/Yacht Club beach, I've also walked closer to the show and watched it from the benches just outside Disney's Hollywood Studios. The fireworks are stunning, but since I've also seen the show inside the park, you're missing some of the experience by not getting the chance to hear the Star Wars music that goes with the fireworks.
I hope that gives you a little more perspective on how you can enjoy the fireworks outside of the parks! Let me know if I can help with any additional questions.
-Jen