One of the Culture novels do include a lengthy descriptions of a party that had lasted a ridiculously long time. Hydrogen Sonata possibly... There are quite a few descriptions of utopian societies partying in sci fi, but usually as an excuse to make one group or another stand out as gloriously debauched to set up the inevitable downturn when someone crashes the party or some character or other at the party is forced to face real life.
But they can be interesting stories in their own right - just probably not easy to expand to novel length.
But they can be interesting stories in their own right - just probably not easy to expand to novel length.