Originally Posted by
Eastbay1K
AS pretty much had as many available fares that fell under "P" as did the others (using multiple seat buckets) and the fare would go up (to a higher fare basis that books into P) as the cabin filled.
Don't think you understand. DL has multiple fares that book into each of the C/D/I/Z booking classes (there are no DL fare basis codes that start with those letters). With the dual inventory check, having the additional booking classes gives you more control than when you are mapping all the FC fares into a single booking class.