“Close to Ballantyne” is somewhat limiting. Nearby (20 min or less) would be Charlotte Golf Links, Renaissance Park, Fort Mill Golf Club, Springfield, and Regent Park. Of those, Links and Fort Mill are very walkable. At Links you could get a Players Card that will get you discounts on regular play. You’d have to check Fort Mill’s prices. Renaissance is also affordable for Meck Co. residents. Another place that I know is nice, quiet and affordable is Stonebridge. I think with backroads (check Google Maps) you could get there from Ballantyne in 20 minutes.

If they were closer for you, I’d say Larkhaven or Charles T Myers. Both are inexpensive and walkable, Larkhaven maybe a little more so. Other good ones are Monroe Country Club and Charlotte National, but they would be a haul from Ballantyne.