Oh man, booze purchases in Pennsylvania, one of my favorite topics!
I wish I had saved the article I read a couple years back about the practice of stopping people who had bought booze out of state. I believe the court ruling was, basically, yes it's illegal, but the PLCB doesn't have the authority to stop a car on the highway.
It never ceases to amaze me that the opposition to any change in our bizarre alcohol sales system is so vehement. The idea that private employees, as opposed to the current state ones, will somehow be less concerned about carding underaged drinkers, seems ludicrous. Also, the idea that the sale of even beer or wine (to say nothing of liquor) at grocery and convenience stores will be a prelude to the end of civilization as we know it in Pennsylvania seems equally stupid.