The best way to shoot fireworks is the "wahoo" method: you guess the exposure (something like 12 to 18 seconds at f11, with focus on the horizon.) ISO 100 film works as good as any. If you can take multiple exposures with your camera, you can try that as well. If you take along a hat or cardboard tube, you can cover the lens between flares in the sky and get a different effect with fireworks.
