An AAR number is a unique identifier that Ticketmaster will issue to those customers who have registered their accessible requirements for the Ticketmaster Accessible Database. MCD cannot accept any medical evidence directly, so those who wish to book accessible tickets or apply for accessible accommodations must have a valid AAR number to proceed. Registration can be done on Ticketmaster's website here.
An AAR will not alter any existing ticket bookings, so if you have already made a purchase and then register, your booking will remain the same on this occasion. You will, however, be able to use your AAR number to complete future accessible bookings or to complete accessible request forms for outdoor summer shows.