On the Divina the YC restaurant, Le Muse, is all of the way AFT>>>>>> on deck 15. So you have to go down to 7, walk across the length of the ship, take elevator up to 15. If you are escorted by a butler you look like either 1) a convict or 2) lost little birdie... (Just Kidding..)
On the Meraviglia, Seaside, etc the YC rest in within the bubble 🙂