I was on the EP in May. There were hardly any children, perhaps becuase of the month. The kids area on the top deck has no shade, and is very limited acitvity, totally fenced off so kids can't get out. I just didn't feel the ship was conducive to kids especially that small. I am not even sure I would bring my 11 year old on that ship. Lots of older people.
Good luck with your decision.