Both show menus.

For Y with meal service, it shows the meal items, and then it lists pretty much the entire snacks/drinks section of Hemispheres (RIP).

For O it shows only the meal, same way as for J.

Tangentially, I notice they've added some new alcoholic drink options. There's a tequila, and there are four types of canned wine (sparkling, rose, chardonnay, cabernet sauvignon). Looks like the canned wine replaces the two types (red/white) of mini bottles.