It's only for vacation packages (flights + hotels).
The coupon code is DISCOVER.
Now with these packages it can get really complicated on what you can save if at all. Try it out if you have a 'vacation' in mind.
Book By: March 28, 2014
Travel: March 15 through October 31, 2014
Minimum Purchase: Flight + hotel vacation package of $1,250 or more
Of course you will earn AAdvantage miles on flights that are part of packages and earn an extra 500 miles by booking online.
Terms and conditions
To quality for the Discover Your Secret Savings booking discount, purchase a flight + hotel or a flight + hotel + car package and enter promotion code DISCOVER at check-out. Discount savings will be revealed at check-out when entering promotion code DISCOVER on the payment page. Purchase of a flight + hotel or a flight + hotel + car package with a minimum purchase of $1,250 is required before promotion code may be applied. Offer is not valid on flight-only, hotel-only or car-only bookings. Discount will be applied to total package price, excluding airfare, cancellation and change waivers, and insurance. Offer is valid for new reservations made between March 10 – March 28, 2014 and for travel between March 15 – October 31, 2014, excluding blackout dates of April 18-21, May 26, July 4, September 1 or October 13, 2014. Discount cannot be honored retroactively or applied to existing reservations and is not valid on bookings using AAdvantage miles as a form of payment. This discount offer may not be combined with any corporate discounts, credit card discounts, affiliate programs or other promotional discount codes. Only one promotion code may be entered per booking. Discount is only valid for reservations booked online at www.aavacations.com.