Thanks to all - exactly the information I was/am looking for.

CaptainJay - we are chartering with you all at CYOA....I certainly like the idea of having private cabs and ordering provisions ahead of time and have done this on previous trips on other islands....however, I have also rented a car elsewhere and enjoy the freedom and mobility that provides too - and in my experience it's considerably cheaper once you exceed a cab ride or 2...rentals are especially useful for the random items - unexpected trip to pharmacy or something like that....Probably most selfishly though, if there is time, I want to check out Rock City Brewing Company (closes at 8 pm) and the parking lot bar - Duffy's Love Shack - which sounds awesome and has been recommended by TTOLers.

Looking forward to a new chartering experience with your outfit early next year!