I have not been to Disneyland yet for the 50th, but I am planning to go in June 2006. How loud do they play the music for Remember? I hate it when the fireworks and parade music are drowned out by the crowd.
I wouldn't worry about it too much. When I was there a couple weeks ago, there was nary a peep during Remember, aside from the standard "oohs" and "aahs". Most people seemed to be too riveted to the awesomeness of the show to actually speak. I know I was. Except when certain parts pretty much forced me to make some outpouring of emotion.