Yeah, I think a similar video played before the start of the show, about how you paid all this money to be here, why see it through a small screen as if you were on YouTube, combined with a few people actually getting kicked out, would work wonders.
They can have a moment in the show for everyone who "needs" a picture or a brief video can take one. And just let everyone know that the whole show will be on YouTube in good quality later-- no need to take your own.