By the way, that's April Fool's Day. (Maybe there isn't (?) a party.)
The event poster says "You May Mask Yourself."
A source on one of the Virgin Islands travel forums said that last year, Skinny's owner Doug Moe,laid in a supply of 200 masks. So, he apparently expects people to appear incognito. The event also featured Fire Dancing, Juggling, Hula Hooping, prizes for the best Masks and "a general gathering of fools."
Music will be provided by The Ish, described at Reverbnation.com as "An original groove band in the Virgin Islands dedicated to diverse taste, solid funk and soul based grooves under tell tale lyrics and powerful vocals … original sound originates organically among a varied collection of players. Bass lines like velvet, scratch your back rhythms, and blow your mind guitar stylings get carried by funky drum licks and textured beats all pulled together with a from the gut soul voice."
Listen to a sample of the Ish here.