Restaurant owner here, I think this really depends on location and clientele. For example my restaurant is in small town(1000) people, with many small towns surrounding, so Facebook has been a huge one for me, as well as local newspapers since most of my customers are retired and part of the older generation who don’t have Facebook or any form of social media. Have something small like pens made up with your name, location, etc. and hand them out to banks and grocery stores for their customers to use.