What does it take to bring 20,000 people together for one day of incredible food and music? A ton of hard work, a great brand, and muscular website. When Sweetgreen tapped ISL in 2011 to take their festival from 1,500 to 15,000 we began a journey that’s seen two sold out festivals in a row – and one great partnership for building a phenomenal social experience. 2012’s full recap post isĀ here.slf1 slf2 slf4 slf5