We tell them we don't want the photo because the flash blinds us so, but they've always made us wait there until the folks ahead of us are done with there photos before we are let in line.
So you don't save anything there..with a tour concept, I imagine they could flow queue showrooms better...I mean in Gringrots, I seem to fly through the bank lobby were there is much to see, then wait just past the newspapers where there is not much to see...so maybe the could flow the different rooms better if there were no outside queue and folks started in groups.