Originally Posted by
Luckytri
Word of warning if you happen to use the PK75's via telephone(CSR): I had a multi-city trip on various days with some seating issues, so I used a CSR. I booked a party of four using four different PK certs.(must be booked separately ).
My fare came to $835 with the PK, but a few days later my Visa was charged $935. Called back and was credited $100 (x 4), but she said it would show up on my next billing cycle.

. I will see if interest is credited too.
When in doubt, check your online receipt. The fare basis will reflect the PK. Here's an example... "KX3A8NC/PK075". I call the PK in this instance the "modifier". For instance, if flying a PerkPass (which books into Y), there's a modifier ("PerkPASS"? forget...) which I presume keeps you from receiving EQM/RDM credit for the flight.
Steve B.