No booths, stalls or partitioned portions of a room or individual rooms used for the viewing of motion pictures or other forms of entertainment shall have doors, curtains or portal partitions, but all such booths, stalls or partitioned portions or a room or individual rooms so used shall have at least one (1) side open to an adjacent public room so that the area inside is visible to persons in the adjacent public room. All such described areas shall be lighted in such a manner that the persons in the areas used for viewing motion pictures or other forms of entertainment are visible from the adjacent public rooms, but such lighting shall not be of such intensity as to prevent the view of the motion pictures or other offered entertainment.