I just learned about the GAC from our OT and looked at the FAQ's for WDW. My son has sensory issues and he's never had to wait in theme park lines before so we don't know how he will respond. Does Universal offer anything that is similar? I think we might need the ability to keep him in his stroller/alternate wait areas due to the crowds and how he will react to the stimulation/closeness of the crowds which could be increased due to heat, etc. We're going to look into the GAC at Disney, but didn't know if Universal was as accommodating.