Hi wdw4us,
Last November my DF had dinner at California Grill, and our reservation time was for either 8:30 or 8:45. It was GREAT! Fireworks started around 9:15 and the lights are dimmed for the guest to watch the fireworks inside or you can go outside to view them. They don't serve any food or drinks during that period, because of the limited lighting inside.
Have a Great time!