When we flew home from WDW a few weeks ago we, we signed up for the SW credit card while we were waiting for our flight. Now we wonder if that was a good idea. The sales person said we'd each get a free RT flight (had to each apply for a card). But I read somewhere that you need to charge $1,000 before you get the free flight. Has anyone taken advantage of this offer? If so, were there any problems booking a flight?