You might be able to just stay where you are, if you don't mind seeing them at a distance.
My mom and I staying at Pop Century on July 4th a few years back. We had gone to the parks early, but were exhausted by the afternoon and went back to the hotel and even with a nap were too tired to go out again, even though Mom really wanted to see fireworks.
We were staying in the 50's building, third floor, looking north, and I realized that looking out from the balcony, I could see the top half of Spaceship Earth. So just before the fireworks were supposed to go off, we took our chairs from the room, and put them out on the balcony and got a very nice view of the fireworks from Epcot and DHS, we could even see MK's fireworks in the far distance.
To make a long story short (too late), I *think* you could see them from your hotel, as it's just as close (if not closer) than the Pop Centy, thus saving a drive amongst the revelers. I'd say- ask for parking lot view (thus facing west) from Building 3 or 4, top floor. That should do it.
