Randall's Island Waterfront Festival in NYC Escape the concrete jungle and head to Randall's Island for a waterfront festival packed with family fun. Events include water-themed face painting, glitter tattoos, interactive environmental activities, lawn games, and cooking demonstrations, all along the park's verdant waterfront. Also expect educational activities with Science in the City, storytime with Boogie Down Books, water-based programming, musical performances and free treats for all to enjoy. The events run from 12-3pm on Saturday, July 20. It's hosted by the Randall's Island Park Alliance.