I have a friend in Everquest who goes to a huge festival in Minnesota every July 4th holiday... it is in her words "intelligensia and debauchery" It does include phosphorescent paint. I call it the Deviant Braniacs. Poohy, you would be right at home, in fact most of us would be right at home there.
There is a gifted kids school there and every year they bring a group of the brainy little ones to show them that nerds can have fun too.
When I get the website link I shall post it for all to see.
Aha! So, Bob's yer uncle... very clever.