Thanks a lot for the info. It sounds the Choice redemption is like the AA or BA redemption, they are being processed in a weekly batch. I know AA's always posts on Tue but bears Mon's date. The cut off of the batch might be either Fri or Sat the week before. BA seemingly works the same way when I looked back last year's redemption. They all posted on the same weekday. I can't remember it is a Mon or Tue now.

So if the batch processing is all the same for those non-instant processing, may be they all are processed at the end of the week. In this case redeemed on Mon/Tue would take more days to see the posting than redeemed on Thur/Fri, just my guess.