Right, I know not everyone is on the dining plan but I am wondering why people choose food court over restaurants in the parks and why people feel it is important to be close to a food court? Is the food less expensive or is it better than the quick service meals in the parks? More convenient than eating in the parks?
Breakfast -
Well, most people feel that being at rope drop is important as usually within a few hours of park open, it gets most crowded. So taking advantage of that slower time period is usually viewed as being crucial. So we greatly prefer to eat, and then get to the parks for rope drop and not have to worry about getting food at that point.
Also, some people need to eat within a certain time of waking up, or it screws up their system for the day. Sluggish, grumpy, etc. So they don't have the ability to wait until you get to the parks.
Lastly, the in park breakfast options are pretty bad. Most CS locations really only do lunch/dinner type foods. There are a few exceptions, but not many. So for the most part in the parks you either grab a muffin, croissant, what have you, or do character breakfast.
Lunch -
No idea why people would eat at the resort. The best thing I can think of is those who go back to nap, swim, etc. It may be easier for them to eat there.
Dinner -
Same thing as lunch. Some people like to go back to change, switch from water park to theme park, etc. Personally we do several smaller meals, so DW and I often will grab something to split when we get back to the hotel as we are usually hungry again by that time.
Is it less expensive or better than at the parks? Not really. WDW has done a solid job of equalizing the prices across property. A fountain soda will cost pretty much the same any where. Same for a milk, burger, omelet, etc.
And the food quality is about the same. Now the resort food courts do tend to offer one of two things. The ones at the values and some moderates tend to offer a bigger selection than you would find at any one location in park. Having 4 windows to serve from gives you the same selection as 3-4 park locations. And the ones at the deluxe resorts may be smaller, but they often have more unique or slightly upscale options. Flatbreads, fancy salads and the like that aren't as common at the other locations. So they do have that going for them.