The first night, I saw too close.
The next night I stayed back a little more, like around the where the circle goes around in front of the castle. That was a better view.
Some people say the bridge to Tomorrowland. I never made it over there, it was too crowded. Also, as soon as the fireworks were over, I got a different position right on the street for the 10:00 pm parade and waited for that to start. I didn't want to lose my spot. I was alone and had sent my DH and DS back to the hotel since DS is afraid of fireworks. Have fun,