This title and the regulations of the Board shall supersede all local ordinances regulating hotels, restaurants, summer camps, and campgrounds other than those adopted pursuant to the provisions of § 35.1-26, except that any locality may adopt ordinances regarding (i) the sale, preparation, and handling of food; (ii) swimming pools, saunas and other similar facilities; (iii) the keeping of guest registers by hotels; and (iv) the display of signs alongside or in plain view of any public roadway to preclude false or misleading advertising thereon to the extent prohibited by § 18.2-217, provided such ordinances are equivalent to or more stringent than the provisions of this title or Title 18.2 in the case of the display of signs alongside or in plain view of any public roadway to preclude false or misleading advertising thereon to the extent prohibited by § 18.2-217, and the regulations of the Board. Nothing in this section shall be construed to limit or affect in any way the powers given to localities under Title 15.2, or under any city charter, or under any other general or special act.