Hello Seth,
Disney's Grand Floridian Resort & Spa for dinner and fireworks sounds practically perfect in every way!
I'm happy to pass on that there is a great spot for you to watch the
Wishes Nighttime Spectacular after you've enjoyed your dinner. Just head to the boat dock on the shores of Seven Seas Lagoon, which is located next to Narcoossee's. I'm not sure where you're dining, but this is on the grounds and a Cast Member can help point you in the right direction. From there, you'll have a clear view of Cinderella Castle and the fireworks, and as an added bonus, they pipe in the soundtrack so you can fully experience the show from afar.
If you have some extra time and can hang around a bit later that night, you'll also be able to catch the
Electrical Water Pageant making its way around the Lagoon. It doesn't look like that evening's schedule has been released quite yet, but the Pageant usually begins at 9:00 p.m. and parades by Disney's Grand Floridian Resort & Spa about 9:15 p.m. Just keep an eye on the website for the official time as it gets closer.
Wishing you a magical vacation, Seth! Please write back if I can help answer any other questions as you put the final pixie dust on your plans.
Beth