A taxi would probably be more expensive than a car rental! Get a car and go to one of the yummy restaurants in Huntersville/Cornelius area. Try 131 Main, RedRocks or Dressler's if you want a treat. If you are just wanting a simple meal, I suggest Bad Daddy's at Exit 25 (one exit north and left at the exit ramp into Birkdale Village), also a fun place to browse or window shop for a diversion! The only close places to the hotel are fast food if that is what you want. I just checked random dates for car rentals and they seem much cheaper than anything else, but check Lake Norman or Charlotte airport shuttles too if you wish to compare!