You have to click on the link for the special to be able to get the pricing. You can't just try to book on the main page. Once you are into the special, you will either get the discounted rate or the giftcard.
Also, for the room only code for the GP you will see the FL res offers first, you have to scroll down for the GP discounted room offer. AP has to be signed on the the AP section for AP prices. Hope this helps.