I'm going to be meeting a relative at ORD (Chicago O'Hare) on a flight tomorrow. It's his first flight, and he is on the autism spectrum; he's old enough to not be an Unaccompanied Minor, as well. The airline is United, if relevant. I don't have status with United (or any other ORD airline).
Is it likely to be able to receive a gate pass to meet him at the gate? For a smaller airport I wouldn't be too worried, but ORD is such a monstrosity I'm concerned he may be overwhelmed by the number of people and size. He's from a semi-rural small town, and isn't used to crowds.
If it is a possibility, what's the best route to take to get the most likely "yes"?