I've never been to a rock concert so I'm not sure if I should dump the $100 it takes to go to knotfest (with my friends) with slipknot, deftones, lamb of god, dethklok, serj tankian, cannibal corpse, the urge, prong, etc. (metal bands). I'm not one to jump up and down, I don't smoke, and I don't drink . I do listen to this music though on occasion (I listen to just about everything). What can be expected if I do go? Think it'd be worth it?