Register at aaoinfo.org Visit aaoinfo.org/members > 2018 Annual Session(home page) to register. Registration is fast, simple and open 24/7. Early registration pricing ends April 6, 2018, so get registered early.2018 Annual Session registration is required before reserving your hotel room(s) in Washington, D.C. The AAO has contracted a large block of hotel rooms at favorable rates. Book your hotel room via the housing link in your Annual Session registration email or by phone.Early Annual Session registration and hotel reservations are highly recommended.Bring Your Team• Each AAO Orthodontic Staff Club member will receive a $25 registration discount for the 2018 Annual Session.• All orthodontic staff are eligible for a 20 percent registration discount when four or more employees of the same doctor register by the Early Registration Deadline(April 6, 2018).** An Orthodontic Staff Club member is eligible for BOTH of the above discounts.