If that's the deal, it's crazy that some of those places are getting away with then discouraging the public from actually going there. Book your visit in advance! Present ID! Photography forbidden! This grumpy security guard will be hovering nearby <3
It's like Nathan For You S03E01 where a store advertises a $1 TV, then tells the drawn in would-be customers to please respect the black tie dress code, crawl through a tiny door, and squeeze past the alligator.