Are they in DLP for a once-in-a-lifetime-visit and are mainly focussing on getting as much rides/shows/characters in as possible. Or is this a romantic relaxed honeymoon, where they want to take their time? And will they be back in the future?
If it's option 1: I would just go for quick service. As table service in DLP takes more time than in the US parks.
Or just go for all kinds of snack options.
If it's option 2: Maybe lunch at Walt's and Brasserie Rosalie (in Disney Village) for dinner.
It also depends, of course, when they are going. How busy will the park be, opening hours etc.