Privately owned outdoor recreation area for use by the general public (such as park, picnic grounds, natural swimming area, golf course and playfield, but not including amusement park, drive-in theater or similar use), provided that:
(a) The use and its design are compatible with the natural character of the area;
(b) The use includes only necessary structures customarily included in the operation of such outdoor activities;
(c) No commercial activity shall be permitted except for charging of admission, the rental of athletic equipment or such other purpose as is clearly incidental to the permitted outdoor recreational use; and
(d) Any such commercial activity as is permitted or parking area shall be screened or separated from a public street or from an adjoining property by a planting strip of not less than 100 feet in width or by such other barrier as is necessary to assure that the proposed use shall not detract substantially from or adversely affect the appropriate use of surrounding property.