It is not recommended to bring children under four to Delta Classical Series concerts. All patrons must have a valid ticket for entry into the performance. Anyone who refuses to follow safety protocols, or is disruptive during a performance, may be asked to leave without a refund. Late seating is at the discretion of the house manager. Artists, prices and programs are subject to change. No refunds are available. No weapons, backpacks, large bags, large umbrellas, video and audio recording equipment, instruments, iPads, tablets and laptops are not permitted in Symphony Hall. Photographers may be taking pictures before, during and after performances. These photographs, including those of audience members, may be used in future ASO promotional materials.