We too have most breakfasts in our room. Even when on
DDP. It definitely saves money, and it's quicker. Plus my DD7 isn't that big of a brakfast eater (or any meal really) so we just take along something for her to eat a little later (like those small boxes of cereal, etc. ) This works well for us.
Also, we split, or share, quite a few meals. Again, even on DDP. Many of the CS serve large enough portions that 2 meals split between my DM, DD7, and myself, is usually more than enough. We also share at TS, especially on DDP.