Put a “Find us on FoodDirect” badge on John O'Groats Caravan and Camping Site’s own website. It links to your FoodDirect page, with your hours, menu and how to get in touch.
WordPress: add a “Custom HTML” block. Wix: Add → Embed code → Embed HTML. Squarespace: add a Code block. Anything else: wherever your site lets you add HTML, often in the footer.