Well, this is disappointing. I am going for my birthday in July and was very excited about the FP offer (I so desperately wanted one during YAMD but never was able to snag one). After reading this thread, I was reconsidering in favor of the gift card, but after reading the fine print, I'm not so sure it's a better option.
From here:
http://disneyparks.disney.go.com/disneyparks/en_US/birthdayFunCard/index
"You may use the Birthday Fun Card towards the purchase of select merchandise items at participating merchandise locations owned and operated by the owners of the
Walt Disney World® and
Disneyland® Resorts. The Birthday Fun Card may also be used for other select purchases including Disney's PhotoPass® on–site services and tour experiences. The Birthday Fun Card may not be used towards the payment of
Walt Disney World® or
Disneyland® Resort Hotel room night folio charges, or a
Disney Cruise Line® reservation aboard
Disney Cruise Line®, or towards the purchase of any food and beverage items, alcohol, cigarettes, spa services and products, or personal services such as face painting, caricature drawings, hair braiding, and hair wrapping."
With all of the limitations on the gift card, maybe the FP IS the better option?