I didn't go inside, because"WHAT?!?!? $10 to walk inside a car dealer? WTF?"
I went back each of the three subsequent trips to Vegas for SEMA. I had heard things about spicy Italian tarts on the lower floor (no windows), but what was upstairs (Maser coupes, 430s, 458s) was lame and pedestrian for my $10. I could see that stuff trolling the Strip for free. I didn't notice any "no photos" sign in '09, but that might have been due to the immediate shock of a cover charge with no SEMA-type models showing off the cars.
Nowhere on their websites, dealer or resort, do they state these "rules" or "policies." (as of today, as far as I could find.)
Personally, I think it's just continued dickishness of Ferrari dealers, projected onto the resort as a symbiotic fake scapegoat.