Only memory I have of the old Green Park restroom facility, was one year a patron with a King Kong attitude went in a obliterated every toilet that was in the place. I mean, busted each porcelain toilet into many pieces - tanks and bowls both! . Kind of a pointless gesture, but maybe that is what led to building the new restrooms.
And you know why the new restroom has curtains instead of stall doors, right? First year it had wood doors; they were all ripped off the hinges for the post-race bonfires. I believe they replaced them with wood and they met the same fate a year later.
