First time I came here it was the middle of July and the bartenders were wearing full Santa Claus costumes. Tinsel was everywhere. I was fallen on *twice* by the end of the night by a very large intoxicated man hitting on a bachelorette party. Black lights and lasers everywhere. You get candy necklaces and toys with your drinks. And the gin and tonics come in pint glasses.
You probably know whether you'll enjoy Bar 11 or not, its ridiculous and you should be mentally prepared.