Unfortunately the ADA states that the bulkhead has to be available for persons with a service animal or fused limbs and thats it.

Bulkhead does become available within T24 prior to the flight. At that point, I would suggest a quick phone call to reservations to snag those seats and if they aren't able to do that request to speak to a CRO. Mind you, even if they are able to get you into a bulkhead seat, you can still be removed to accommodate the two cases I mentioned above.