Notwithstanding the provisions of this article, and notwithstanding the provisions of § 195-126, limiting to one the number of liquor outlets in a shopping center as herein defined, any business meeting the definition of "grocery store" as set forth in Section 30-1 of Chapter 545 of the Connecticut General Statutes and occupying a gross floor area of 15,000 square feet or more in any shopping center as defined in § 195-126 shall be allowed to have a grocery store beer permit; provided, however, that the existence of a grocery store beer permit in any such shopping center as of the date of this adoption of this section shall preclude the establishment of any other liquor outlets in such shopping center unless such other liquor outlet is located in full compliance with the distance restrictions set forth in § 195-122 above.