Wil Wheaton Would Turn His Flash Off.
There are only a few reasons why an event or attraction will declare "no flash photography":
- Safety of performers
- Enjoyment of guests
- Flash light might damage items on display
- Protection of intellectual property or copyright (rare)
You wouldn't want anyone to get hurt because you've blinded them, right? You don't want to be "that jerk" in the audience, do you? Take a couple minutes now and learn how to turn the flash off on your camera.
In many of these cases, your pictures probably won't turn out well, even with the flash firing. The effective range of the flashes on most consumer level cameras is, at best, 20 feet. Visualize that - that's roughly the length of a car. If your subject is any further than that, and you don't have a tripod, you're wasting your time. If you must try for pictures anyway, please turn your flash off and don't ruin the show for the rest of us.