What are the best viewing places for the show?
In front of the castle, in the hub. Not too close to the stage - or else you get crane neck.
I have also seen it from behind the castle. Not crowded, but not the best views.
Also @nathanwagner depending on when you are going, you may want to get there 20-40 min in advance.
I'm confused do u mean what time or what day?
Depending on when you are visiting, and what the crowd levels are like that day. CL 10 day, get there really early. CL3 day, not as early.