Traditional LAN party: Everyone brings their computers to one place to connect via a LAN, where they play games, swap files, demo stuff to each other, etc.
My LAN party: All my friends come over to my house and use the computers that I have already set up for them. Nobody brings their own. The point is to interact face-to-face, with video games as a catalyst. Swapping files and demos doesn't really happen since nobody brought their own computer. (My house: https://lanparty.house)
The Promised LAN Party: The LAN is extended, virtually, across multiple houses, so that the participants can play games, swap files, and demo stuff without actually leaving home. It's arguably no longer "local" but functionally it enables the same activities as a LAN party, other than the face-to-face interaction part.
I wonder who gets told their definition is "wrong" more. :)