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 Is there a current map of the festival grounds? What items are allowed & prohibited at Boston Calling? What kind of food is going to be available? Do you have lockers available for rent? What are the location, dates & hours of Boston Calling?