>"NO PILLS EXCEPT THOSE IN A PRESCRIPTION BOTTLE WITH MATCHING NAME" and about 100 other things they banned such as liquor.

As someone who's passingly familiar with a small local festival's management, I'd be willing to bet that those rules are being required by the festival's insurance company. Of course, if they actually cracked down on the drugs/alcohol, they'd have a lot less people show up next year (and management knows it).