I think you have RR confused with flying stand-by. It is not. You receive a confirmation about your free ticket and then book a flight either online, on the phone or in person. You have a seat just like those who paid for one. If however you check in at the gate very very late, you run the risk of being bumped as does those with regularly bought tickets. Those bumped usually receive some kind of additional compensation as well as another seat on another flight...Mark