Exhibits which include the operation of musical instruments, radios, sound projection equipment, public address systems, or any noise-making machines must be conducted or arranged so that the sound resulting from the demonstration will not annoy or disturb adjacent exhibitors and their patrons, and not cause the aisles to be blocked. Operators of sound-making exhibits must secure approval of operating methods before the use of glaring, chasing or irregular lighting. Additional AV Service and Pricing are available. Click here for this additional information.