Just wondering if anyone has first hand experience. I know it is FAA approved, but it's always great to read a first hand account. It's not about the purchase. We already have the frontier and love it. My ds is 2 (will be 3 in the fall), but is 39lbs and about 39". We have an upcoming trip, and are taking the seat with us. Would love for ds to use it on the plane for safety and familiarity. It just seems so large that I'm a little concerned. Hence, looking for the first hand confirmation. TIA