Help break the Guinness World Record for the largest water balloon free-for-all fight (they're hoping for 3,000 bodies), with your $5 admission going to support GA non-profit Camp Twin Lakes, which offers year-round recreational, therapeutic, and educational programs for children with serious illnesses and disabilities. There'll also be live DJs, plenty of other games and prizes, and a full bar, where your request for a dry martini will be doomed.

Add this to My Thrillist

Take a few in the face for a great cause, and register today for speedier check-in, at 99X.com