Congrats on having another girl. I have two girls, 3 and 6. (same age difference as yours will be.) It worked out great. The older one was old enough to take care of herself for the most part when her sister was born, but yet they are still close enough they play together all day.
I thought I saw on the activities list that they had a separate unbirthday party for the younger set. Or was I dreaming?
The Dodgers have a minor league team in Vero. You could go to a game.
And I also thought in the summer they had the Goofy character meal on Wednesdays, too? Anyone?
As for Orlando, have you thought about staying at that Holiday Inn Family suites? It is supposed to be great, a resort all unto itself. That way you don't have her thinking Mickey like she might if you were at All Stars or Pop. I see deals for the hotel all the time. I think we will do this one day and go to Sea World.