On Oasis class ships, the "name" of the menu is posted on the cruise compass (Mojo, Saffron, etc) as to easily identify the theme for that night. These menus are (mostly) the same fleet-wide. It's fairly easy to hunt down the content of these menus once you know the name of the menu you're looking for. I know there's a link floating around to one of those PDFs..
... that being said, they are in the process of rolling out fleet-wide menu updates so no idea when it'll start hitting most of the ships.