At RFD in D.C. they'll have a charity event on May 2nd.
Starts at 4 PM, $40 ticket gets you food, drink and live music in the Courtyard and Backroom Bar. The flier I have in front of me says "bottomless cups of Flying Dog and Miller Lite". Wizard cheerleaders, door prizes, raffles, giveaways, t-shirt. All proceeds go to Children's National Medical Center.