No person shall operate a sexually oriented business within 1,000 feet of any existing sexually oriented business, or any church, synagogue, temple or other place of public worship, or any elementary or secondary school or any school bus stop, or any municipal or County playground or place of public resort and recreation, or any hospital or any child care center, or within 1,000 feet of any area zoned for residential use. This subsection shall not apply to a sexually oriented business already lawfully operating on the effective date of this paragraph where another sexually oriented business, an elementary or secondary school or school bus stop, or any municipal or County playground or place of public resort and recreation, or any hospital or any child care center, is subsequently established within 1,000 feet, or a residential district or residential lot is subsequently established within 1,000 feet.