The first thing to decide when planning out where to eat is to decide what your budget will be. Disney has a lot of amazing restaurants to satisfy every foodie’s palette, but the cost can really add up. You need to decide what you feel comfortable spending for food for the week.
At the very minimum, I have figured that it would cost me at least $300 US per person for a week if we were to only eat quick service meals all week. That is the base amount that I start with and then I decide if I want to splurge a little more.
If you are on the dining plan, then there is not much to think about in terms of spending since it is prepaid. You just need to know how many credits you have and plan according to that.
The table service restaurants are really the only ones that you will need to plan for since you need reservations. Quick service restaurants do not require reservations and you can walk up to any one anytime.