Originally Posted by
ijgordon
I wonder if the algorithm would assign seats to the QC upon purchase once that's all that's left. And then how do you handle pax who refuse to be quiet because they didn't want the QC but it was the only choice?

This is indeed how it goes. All other cars (other than FC) are assigned before the QC. On not completely full trains you get the desired "only people who want to be in the QC are in the QC" effect. On completely/almost completely full trains some people who don't want to be there are forced to be there, I guess, but I always sit in the QC and even on 90-100% full trains, it's decently quiet.