Originally Posted by Old Bailey

Hello,
I'd appreciate anyone's help with clarifying how I might use an SWU (I rarely use one). My wife and I fly to RSW in a couple weeks. She's on a First Class ticket because she rarely/never gets upgraded as a GM. I'm a DM and usually (not always) get an upgrade. I'm on a T fare to RSW and will likely get an upgrade. But, can I move up on the upgrade list if I haven't cleared at check in time by calling the Diamond desk and burning an SWU certificate? The web site is of no help to me. Sorry to be such a dumb a.. about this and thanks for any input.