Hi all.

The codes after your WorldPerks number on the mileage summary
statement indicate what segment you are in for inserts (geographic
or already a WP Visa cardholder, etc.), special messages (WorldClubs
membership about to expire, etc.) and the like. I'm not sure why
they need to print, but it may be a vendor QC thing.

The items on the boarding passes are:
FQTV - FF# (NW/KL/AS/CO only, I believe)
PERK - Elite status (NW/KL/AS/CO)
CORP - Corporate customer
PREM - Full fare customer (or upgrade done incorrectly as someone else
pointed out!)

These "SSR" items are notes, meant as help for agents and to let
customer know that status is recognized and that the FF# is in the PNR.

Hope this helps.