Are the bathrooms gender specific? I have a friend who is in a wheelchair and requires assistance and space in the restroom to maneuver wheelchair.

There are male and female restrooms. I don't know about the space for a wheelchair.

Traditional diner....built long before handicaps were commonly recognised

It would be a little tough to maneuver around but it can b done.

I use a chair and its not friendly. I can sit in the first table but not much room for maneuvering and definitely not for the bathroom

Yes the bathroom are gender specific. About maneuverubg wheelchair could be iffy. I would call and ask manager.