No sexually oriented business shall be permitted to include within its commercial building, structure, premises or portion or part thereof any partition between subdivisions of a room, portion or part of a building, structure or premises having an aperture which is designed or constructed to facilitate sexual activity between persons on either side of the petition; and any booths, stalls or partitioned portions of a room, or individual rooms, used for the viewing of motion pictures or other forms of entertainment, or live entertainment, having doors, curtains or portal partitions, shall be permitted, unless such booths, stalls, partitioned portions of a room or individual room so used shall have at least one side open to an adjacent public room so that the area inside is visible to persons in the adjacent public room.