http://www.disboards.com/showthread.php?t=595713
Fourth sticky
The Guest Assistance
Card is to let Cast Members (CMs) know what limitations a guest may have. The GAC is only for persons with hidden disabilites. The GAC can get you into a seperate waiting area on some rides.
I am not familiar on FAS and it and FASD is a very wide range of possble limitations on your trip but I can tell you what I know from the Autistic and SID/SPD side. REading up on it leads me to say definitely take a stroller and use it.
http://en.wikipedia.org/wiki/Fetal_Alcohol_Spectrum_Disorder
There are many things you can do to help make the trip more enjoyable. there is the baby swapping pass, fastpass, extra magical hours, GAC, and trip planning. You can check the autism section of FAQs for tips on how to deal with sensory issues and the inability to wait. Ear muffs used by hunters and construction workers are wonders for sound sensitive kids and they even come in infant sizes.
Fidget toys, busy work, chew toys, and other stuff keeps kids focused on something beside standing still or being in a line. Ipods, walkman radios, hand held games, and gameboys are examples that put noise into the kid that blocks out the surrounding bustle and entertains them. Some parents practice waiting in line and doing things like watching videos to see what is going to happen.
You can get a "stroller as a wheelchair" GAC. It allows you to take the stroller into most rides to the end of the line and while in line at shows. The stroller tends to give sensitive children a safe haven from crowds and noise. It keeps people a bit away from the child and forms a comfort zone. FAS and SID/SPD children react to stress and exhaustion so using a stroller reduces the stress and exhaustion thus reducing the meltdowns and other problems.