My wife's best friend and her husband will be taking their first flight ever from CLT to SEA on AA. We bought them F tickets, and also sent them a pair of carry-on size suitcases. I don't want to overwhelm them with advice, but also know how important preparation is. What are a few important things I should tell them? Should they check their luggage? This same couple came out here for our wedding in 2004 on Amtrak, and had a great trip. But Bedrooms cost twice as much as airfare, and they don't have enough time now to travel by train.