At LAX now, waiting to board flight to HNL. I filed for the exception on 1/17, and the QR code was emailed literally the second I clicked submit.
The code was yellow. It said a second email would be sent the day before departure but it never came.
Gate agent distributing the wristbands said if our code was green, then they needed to scan the code and see our ID. If our code was yellow, they would need ID as well as documentation (i.e., vaccine card).
Right after they scan my code, verified my ID and vaccine card, they did something on their IPad/tablet, I hit refresh and my code turn green.