I'm not sure how many nights you are staying, and that would factor in on the decisions. We normally stay 9 nights & we like to plan 2 days at water parks, along w/ 1 day to "goof off" & play at the resort. For those 3 nights, we try to eat dinner at the different resorts. With the ages of your little darlings, these would be my choices for the parks:
MK--Crystal Palace (we've had lunch & dinner, but I've heard b-fast is wonderful, too.) The kids just love the whole Pooh gang.
and/or
MK--O'hana's (at Poly) for b-fast w/ Lilo, Stitch, Mickey, & Pluto (Stitch may be scary to the babies??)
EPCOT--
Garden Grill-- Mickey, Pluto, Chip & Dale spend lots of time w/ each table.
DHS--Hollywood & Vine breakfast (Even though we didn't love the food, your kids will probably LOVE the Playhouse Disney characters)
AK--
Tusker House breakfast w/ Donald (We used to go to Breakfastosaurus w/ Donald, but they don't do that...so this will be our 1st summer at Tusker House)
extra--Chef Mickey's at Contemporary--again, the food is not great, but your little ones will have some great characters coming to their table (rather than all of you waiting in a long, hot line for pictures & autographs)
