In reply to Caspar Hübinger.

I just heard of this post from the WP Sofa podcast. And my very first thaught was the same. Let attendees decide to pay for alcoholic drinks and give them some free non-alcoholic drinks. So it's everyones own decision to drink or not to drink alcohol any pay for it. A WordCamp and their after parties are not about "Free Beer" but about meeting and talking to people. The sponsors money can be better used for other things.