D.J.
Under 3 they will be admitted free into the Disney Parks, you could visit Magic Kingdom and go to Fantasyland. They have a very nice Baby Center in the MK, all the parks have one, but theirs is the nicest. They have rockers, microwave, family bathroom, etc.
IF your DH has a choice where you stay, look for a hotel with a zero depth entry pool, or nice kiddie pool. We always try to stay in a hotel with breakfast, one of us will run down and grab fruit, yougurt, cereal, etc and the kids can snack while we get ready in the morning. Nothing worse than packing them up and going to breakfast and having to wait for a table and wait for food. We will grab a small snack even if we are headed out to eat, just in case there is a wait! Downtown Disney is fun to go walk around, you could do a character breakfast although you need to call and try to get a reservation.
Sea World is fun too, especially with the option of going back another day.
I don't have a lot of suggestions on restaurants, but I do suggest Macaroni Grill. They have some healthier kid options, my daughter gets grilled chicken and broccoli, the other pasta and veggies. It is reasonable, and not everything is chicken nuggest and burgers on the kid menu.
Have a great trip!