I’d be asking AA and annotating the answer. But it appears like you can cancel anytime.
Penalties
PENALTIES - CHANGES/CANCELLATIONS ANY TIME CHANGES/CANCELLATIONS PERMITTED. NOTE - TEXT BELOW NOT VALIDATED FOR AUTOPRICING. FOR TRAVEL AGENCY BOOKINGS MADE IN MEXICO / THE CARIBBEAN / CENTRAL AND SOUTH AMERICA - AA WILL ASSESS A USD 25.00 FEE ON ANY UNTICKETED RESERVATION NOT CANCELED BEFORE DEPARTURE. ------------------------------------------------ REISSUES / EXCHANGES NOT ALLOWED TO EOU/ERU FARE TYPES.
Of course, if this is intended only to access airside facilities, such as lounges, AA has the right not to refund.