Hopefully you don't mind a mini bump.

I've got a CA J flight coming up KMG-RGN (2:10 flight duration). This is an incredibly frivolous question, but this is FT. I was wondering if CA serves champagne on regional J routes. PEK-BKK and PEK-ICN seem to. I am wondering if route yield/prestige, flight duration, aircraft type etc factor in. CA's regional services look a tad more polished than MU's (e.g. printed menu, wine list), but most CA trip reports are naturally PEK based. KMG is at best a minor focus city for SE Asia routes (relatively speaking).