I am confused and hope somebody could help me out. We are taking our daughter to Disney for her first time in November. We never traveled with a child before, so I am not aware of what to do. She is three years old, over 40 pounds, and very tall for her age. We have friends who have flown with children much smaller and they have gotten the kids their own seat on the plane. My question is do I need to bring her booster seat onto the plane or can she sit in her own seat? I am hoping to keep the seat home, and the car rental company will supply the booster. Thank you for any help, and sorry if it is a silly question. I figured i would get help on these boards. Thanks again...