This is well after the fact, but for the future, be aware that it seems that Discover classifies counter service and carts as "Travel/Entertainment" and not Dining". I used my Discover card in Q1 this year when dining was at the 5% rebate level. The places I went to offsite (Sweet Tomatoes, Fuddruckers and Earl of Sandwich (at DTD)) were classified as restaurants, but inside places, such as Peco's Bill, Columbia Harbour House, ABC Commissary, Yorkshire Fish, San Angel Inn (outside CS) all got classified as Travel/Entertainment, thus 1% rebate. Not sure if there's an appeal process, but I didn't spend enough to bother.
Note that the Discover promotion was Q1, so it's over. I know Chase Freedom has restaurants in Q2, but I was back before April started so I can't answer what the classifications are.