Make you Advance Dining Reservations (ADRs) ahead of time. Especially if you are wanting any character meals and / or any Table Service (TS) meals in the Parks. These reservations fill up fast and when they are gone, you cannot get in unless someone cancels.
You can always call back and change your ADRs. A lot of people do that. It is hard sometimes to plan every meal 180 + days out. But, w/ a base plan, you can change around what you already have.
Good luck.