what else do they like? any particular food they really like or always wanted to try? Also when will you be there, that might change what's available foodie wise.
Off the top of my head for interesting experiences: hoop de doo review, sci-fi dine-in, 50's prime time, Be our guest (MAYBE), something at Polynesian, sanaa I really like but depends what they are into. Then you have the different desert parties and fireworks cruises. Lots of choices at epcot.