Ephemerisle Festival Cancelled…
…because of unexpectedly high insurance costs; see the explanation from the planned festival's organizers.
However, random unorganized gangs of people who show up somewhere without a single responsible entity selling tickets might still be gathering at the festival's planned time and place.
See my past Reason writings on both the first Ephemerisle festival, and on the larger Seasteading idea that the festival is meant to help actuate–the hope for eventually free-floating and free independent cities on the high seas.