How about putting a high visibilty sign out front, and run a crazy special for a week or so….I bet it would get a lot of people in the door….
 
For instance, when I open my concession trailer I am going to run a grand opening special….I’m going to put a big sign out front with balloons…
 
My special to get people “in the door” will be 2 dogs any style, fries, and a drink for 3 bucks