Carl&#x27;s Jr. is a fast food restaurant, has (or had, last time I was in one instead of driving through) table service of the same style as fast-casual restaurants where tipping is common, and yet I&#x27;ve never seen anyone tip at Carl&#x27;s Jr.<p>I think &quot;one does not tip at a fast food restaurant&quot; is a culturally-accepted rule that trumps &quot;one tips one&#x27;s server at a restaurant&quot;.