Yup, this is definately allowed. Because you get so much food we'd often split the plan up. My boyfriend would use the dining plan to get the full appetizer/dessert treatment, which we'd share, and I'd just order a small meal separately. It allowed us to stretch out our TS dining since we used 2 credits on a couple meals (Cinderella's royal table being one of them). It also made sure we didn't get TOO much food if we weren't really hungry.