My second trip since May to use last voucher and booked into "K" fare ATL-MKE.

Even though this is the shortest trip anyone would ever take using a PMU for me it make sense since I'm done with paid trips.

Booked into "K" class and no seats available for PMU upgrade on a MD-88.

The flight is 9 days from now and three seats are shown taken on the seat map. PM agent agreed FC wide open. Since it is F9 that means to me there are at least 9 FC seats for sale.

I can't believe the certificate is not available. To me this is a scam. People will defend DL, I'm sure, but this is a benefit for giving DL over 75K of BIS miles. If FC was pretty full I'd say go for the revenue but this is ridiculous.