Thank you! That link was perfect.
Onto my next question. I'm booking a flight for my sister and with my combination of ETCs and FFCs. All expiring 12/31/23. Which ones should I use first? Is one better to get rid of first?
After I book it, she'll also most likely be making changes on her end (using the record locator). I didn't know if ETCs or FFCs made a difference when making changes.