I've jumped at dropzones with both sets of rules and they both work ...as long as there is a clear understanding by all parties. The rules shouldn't change on the whim of the DZO. I don't quite see the "liability" issue as long as everyone is on, and stays on, the ground. The Laws covering DUI and the "liabilities" for letting someone drive while impaired is a different issue. If you are providing the alcoholic drinks and they are impaired while driving afterwards you ARE liable. How this covers "free beer" is anyone's guess.