A.M.
You can't bring water bottles through security, but you can bring food/milk for the baby. If you use formula and need the water for mixing, I would buy one of those travel containers that have separate containers for formula. Then you can pre-serve the formula (whatever amount you need), and then you just pour in the bottle when you are ready to feed. This way, the bottle won't go bad. If you are more specific about the water you use (for instance, I always used that "baby water"), then you can buy water bottles once you get through security, and they will allow you to bring that on the plane. Have fun in FL!