Oh geeze... I'm not even sure what book I'd pick. Part of me wants to say one of the "Scary Stories to Tell in the Dark" books, but an Agatha Christie or The Scarlet Pimpernel is pretty high up there, too.
Marshmallows are a must. With or without chocolate and graham crackers. I like them just on the dark side of golden brown. I can deal with burnt, too, though. They make me think of my mom (we used to always tease her about "burnt offerings"). Starbursts to roast are also pretty awesome.
Definitely sit with the group. ...Or at least at the fire. I don't always sit with the group when I'm at the fire. Sometimes I move so I'm with them, but separate.
Singer, huh? .... I think I'd probably say Rascal Flatts or Beatles. ...Or, if I'm in a whacky mood, the tape (or cd) "Late Last Night" (it's one I listened to as a kid, it has that song, Wiggle in my toe, What do they do with the children, and many, many more).
Well, I kinda like scary stories, especially when camping, so maybe RL Stine? ...I'm honestly not sure, though.