Rubric, go at the time as indicated on the intruction sheet. The crowd for the NE show started coming in at 2pm. Well.. the spectator seats are really crowded and it's not really very safe to run about. If you want to take picture, the best location is at the west wing where the president seats. If you like stage works, the east wing is where all the choir seats. But I don't think it's easy to capture them from that position. Bring a telephoto len if you have to do close shots. But again lightings quite bad.
As for the fireworks, please watch out for debris falling from the sky. you can be burn if you are suay. So while watching pls have your umbrella on guard. Enjoy your show tomorrow.