Accessory Uses. Management buildings, recreational facilities, restrooms, showers, laundry facilities, other uses, and structures customarily incidental to operation of a recreational vehicle park are deemed to be permitted accessory uses in a recreational vehicle park. In addition, grocery stores and convenience shops shall be permitted as accessory uses and are subject to the following restrictions:
1. Such establishments and the parking area primarily related to their operations shall not occupy more than five percent of the gross area of the park.
2. Such establishments shall not present visible evidence from any street outside the park of their commercial character that would attract customers other than occupants of the park.
3. The structures housing such facilities shall not be located closer than 50 feet to any public street and shall not be directly accessible from any public street, but shall be accessible only from a street within the park;