I can confirm there is no 30% discount at Via Napoli. We ate there last night and the CM said no because, as others have pointed out, they are not a Disney owned and operated restaurant.
I called the annual pass support line asking for which restaurants qualified and the CM was very helpful, but couldn’t point me to a full list. He said that any restaurant that was Disney owned and operated would qualify. Via Napoli, Space 220, Yak and Yeti are no’s. Cinderella’s Royal Table, Be Our Guest and 50’s Prime Time are all yeses.
He said if I had questions about any specific restaurant that I could call again and get a straightforward answer before dining.
Hope this helps someone!