How about a rousing rendition of "Little Martha" by the Allmans....I know it's originally done w/2 guitars but with a little creativity you can arrange it for 1 ( I was once hired to play this at a wedding ceremony).
So this situation sounds intriguing, tell us more......you are going into the woods with a bunch of strngers who you never met before who know you play guitar, but now you don't wanna play and are just planning on getting drunk?