Southwest - Gate check carseat, or carry-on and use if available seat?
My wife and I are traveling on Southwest with a 17-month-old lap-child on SWA. We did not buy a ticket for the child, but will be bring a carseat for him for the following international flight on Asiana. We will each be checking 2 bags, and we will have a small folding stroller we plan to carry on or gate-check. Can we gate-check the carseat too, or if there is an available empty seat can we take it onboard and use it? Or, do we just have to check the carseat as an extra bag for $25? Has anyone had any experience on Southwest with this?