When I visited PKD back in 1998, they were giving out basketballs that were deflated, made me wonder why PKI didn't do that.
As far as employees not playing games, my understanding of that was, since they were no way to get a recepit that said you actually won the game, they had no way of knowing if you actually won the prize or a friend at the game gave it to you. That's why they had the plush sale once a month, so you could purchase whatever prize you wanted and they could give you a receipt to show on your way out.
Again when I worked at the park (1999 - 2001), they were no said rule about employees couldn't attend any show.