i would say the world showcase signature/table service restaurants at epcot like le cellier, san angle inn, le chefs de france, le origanle alfredos, biergarten. grand floridian's Victoria&Alberts & citricos, boardwalk's flying fish, contemporary's cali grill, wilderness lodge's artist point, yacht club's yachtsman steakhouse. dtd's fultons crabhouse, cap'n jacks.
although we have seen children at all these restaurants (you are at wdw) they seem to be more adult geared, with their wine pairings, food & decor.