SRS, the camp staff does food, but quite a few non-performers come, and some who say they 'don't sing'. You'd be amazed at how many of them wind up singing a song or two though, because they've got a song and feel comfortable enough. The late night cabin music is completely unstructured, although it's usually a singaround to give everyone a chance. It's like a big informal party in a living room...a very cold living room. Think campfire singing as opposed to open mics or anything like that.