I don’t know if they still do, but Facebook used to count viewing a web page with a Facebook “like” button as being an active user
Twitter has always been “small” but popular with people who work in the media, so you hear it mentioned on the same level as Facebook by those people, even though it’s never been any where near the same size
The restaurant is not owned by Disney, but it is on Disney property at Disney Springs, Orlando. I would imagine that they are going after a much bigger sum from the restaurant itself