@Dulcee If you are trying to watch the fireworks from outside the parks, you may want to book a dinner at
Pixar Place Hotel. They used to have a rooftop deck that had a great view of the fireworks. They even piped in the music. I think to get the deck you either had to be staying at the hotel or have a dinner reservation (I was able to watch because I was staying at the hotel when it was still Paradise Pier). I'm not sure if this is still true, so hopefully someone who has been to the park more recently can confirm or correct me on this.