Did you reserve the first show? If so, you are seated for Fantasmic and then can stand for fireworks. You can stay in the same location where you watched Fantasmic or move forward or to the side if you like.
Fantasmic ends at 9:27 pm and fireworks start at 9:30 pm. Immediately after Fantasmic ends, they open the dining package area for others to enter to watch fireworks. Sometimes the other guests rush in quickly before the Fantasmic viewers get the chance to stand up and pick up their belongings. Just letting you know so you are prepared.
There really isn't a bad view of fireworks from the dining package seats. If you have small kids, you might want to move forward for them to see the projections on the water screens. The picture below will give you an idea of where the fireworks are relative to the water screens in the RB dining package area.
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