While browsing Youtube, I found a clip with footage from The Gathering 1992 in Norway. This clip was taken from the news on NrK (a Norwegian television station). It was broadcasted in Easter 1992.
Even if all the talking is in Norwegian, I thought you might find it interesting to see how a demo party looked back then. You'll get to see a clip of Pinball Dreams being played as well.
Enjoy!
The Gathering 1992 footage from NrK
In short they are portraying the party as creative, where the aim is to "create the best program".