It is definitely true that the route and clientele are part of the issue. And I do wonder how these people get on when the get to LAS. I know they are probably on trips-of-a-lifetime and all that, but given the cost of entry and booze in nightclubs, hotel rates being 3x what they were a few years back, $80 steaks, $25 min tables etc, I think they will mostly have pretty crappy experiences.
But even taking these aside, the cabins, seats and toilet situations are still horrendous and there is no way I would tolerate them. Compared to the old 747 Y cabins they are just hellish.