A merchant owned a skate rental business that she operated out of a specially equipped van. She would drive to various parks and public beaches within her home state and rent roller skates, related safety equipment and lightweight stereo/earphone sets to passersby on an hourly basis. She also sold skates and skating equipment. About 50% of the merchant's time is spent in a single city, and she earns about 70% of her gross rental and sale income at that city's beach areas. After receiving numerous complaints from beachgoers about the sidewalks congested with roller skaters, the city council passed an ordinance prohibiting roller skating on public property between the hours of 7 a. m. and 9 p. m. If the merchant seeks to enjoin enforcement of the ordinance in federal district court on the basis that it is unconstitutional, what should the court do