I think you said you were going down to Duck soon and you're staying in the Four Seasons community, right? If so, could you do me a favor (only if you get a chance)... could you find out if there is a trolley schedule for that community. I thought I read that they have a trolley for that community that is constantly running, so that you don't have to walk to the beach or to the shops, but I'm not positive.
Have a safe trip. Good luck and happy planning