Hi Andrea!
Coronado Springs Resort is a great place to stay, and my children (both at pre-school ages at the time) loved it! When you arrive, it may be too cool for the various pools, but they still have a nice playground over at the Dig Site, as well as an arcade.
So, sounds like you are staying there 5 nights and 6 days? You can mix-and-match what works for you and family, but on a typical 5-day trip, we'd do something similar to this:
2 days at Magic Kingdom
1 day at Epcot
1 day at Hollywood Studios
1 day at Animal Kingdom
When we visited when my daughter was 3-years old, she absolutely loved the following restaurants:
Chef Mickey's at Contemporary-Chance to meet the Fab Five of Mickey, Minnie, Goofy, Donald, and Pluto.
Coral Reef at Epcot-my daughter loved to watch fish swimming, and the oversized aquarium provided the perfect viewing spot.
Cinderella's Royal Table and Akershus at Epcot-Princesses with princess daughters, need I say more? :-)
Playhouse Disney Breakfast at Hollywood and Vine (Hollywood Studios)-get to interact and dance with the characters; sheer joy for a 3-year old.
Good luck, and hope this provides you somewhat of an idea. A final note, be sure to check out the Maya Grill and even the Pepper Market at Coronado. Both are excellent places to eat!