Have never flown SW before but are using them to go down next Tues. We have a connection in St. Louis and only have about 25 min from our arrival in Stl Louis until our departure time. There is a lot of talk about checking in early to get an A seating time, but are we just out of luck for the connecting flight since boarding will probably already be going on or done by the time we get to the gate? If we cant all sit together I can live with that as long as either my wife or I can sit with our 5 yr old. Our older kids (17 & 13) will be fine sitting by themselves. Thanks.