What is the age policy?/Children at the Festival Updated December 21, 2023 02:40 Boston Calling is an all age festival. Children under 10 are free and do not need a wristband. Related articles What are the location, dates & hours of Boston Calling? Can I leave/re-enter on the same day? Is there a current map of the festival grounds? Is there a schedule of performances? What kind of food is going to be available?