An inexperienced passenger tends to try to shift to counterbalance the lean, which is exactly the wrong thing to do. That can actually cause a crash. You should just stay upright in relationship to the seat, even if the seat and bike are leaning.
It always freaks me a bit to see people without helmets (legal in a neighboring state). I don't think I would be able to enjoy it. I would be too nervous, plus bugs in my face, blech. I'm fine with my full-face helmet, even if it does squash my hair.