At the Swan, Gullivers (at dinner)/Garden Grille(at breakfast)-we've done Gullivers several times. Food is very good and they also offer a buffet that changes daily (that's good too), some of the desserts are delicious! Timon and Rafiki rotate with Pluto and Goofy as the characters at the dinner.
We've had lunch at the Splash Grille inside, but there are places to sit outside by the pool) a few times which was also good. We haven't eaten at Palios which is a little more upscale (offering Italian fare).
At the Dolphin, Tubbi's is a convenient buffeteria style restaruant. Great for a quick meal or just to fill up your refillable mug. We've eaten at the Dolphin Cabana Grille outside, they have some tastely lunches. But, be aware this is opened according to weather since it is mostly outside.
We've had ice cream, lunch and dinner at the Dolphin Fountain, a fun very casual open 50s themed restaurant. They have yummy shakes! The Coral Cafe serves breakfast and lunch and they have a character breakfast on Sundays (I believe)...we haven't been to either of these meals.
Shula's Steakhouse is also located at the Dolphin. I've only heard great things about this restaurant but it is quite pricey.