It depends on what type of breakfast you are looking for.
In particular, do you want:
1. A quick breakfast so you can get to the parks early.
2. A sit-down breakfast with waiters.
3. A character buffet breakfast
4. A breakfast in the park after you have first ridden some big rides.
Normally we do #1. We want to eat quick and get to the bus stop to be at the park when it opens. We use the food court and very often just the 'grab and go' part. Sometimes the hot food line isn't open yet.
During the trip we will schedule one character breakfast, #3 above, usually at the Crystal Palace early.
People who have villas and kitchens will, of course, probably eat in their rooms. Even some people who have regular rooms but are looking to save money will have milk and cereral and toast, etc. in their rooms. The moderates and deluxe resorts have free refrigerators.
Overall, you have to figure how much park time you are going to invest in breakfast.
Good luck.
:slurp:
BTW- EPCOT is a tough place for breakfast unless you are doing a princess meal.
