K.K.
I myself have traveled a few times on a plane with a two year old, suggest taking it if you know your busy two year old will be all over the place. My son found out real fast how to undo those easy airplane seat belts, so I usded it as a safety device and for my sanity of not having to fight him to stay in the seat, I understand each child is different. Another thing to keep in mind is if you are going to rent a car when you get to Florida or if you will be with other family. Most rental car places have car seats that you can use, much easier than checking in for luggage, you know how rough they are with your bags, do you trust your childs car seat to that kind of care? Hope you get some positive and help ful answers.