I got a disaster experience in April flying J Sin-Doh.
A359 QSuite.
Crew awful, no welcome drink, last to get pajamas and no more size available (even after requested one during boarding), it's like the crew was away during this flight... almost no service.. no care for my Emerald QR ether.
Wifi was not working during all the flight (crew pretended that it was a problem because Indian airspace, it was a server problem (no login) - new aircraft)
HDMI was defect and shuted down my IFE, unusable.
I told the MDC that I will report for this awful flight, she was not interested (same as Doha QR CS after I sent email).
As upgraded J I did not get Al Mourjan access, wifi was not working in the first lounge / business lounge... all my work was blocked... lounge dragon confirmed the problem but nobody know when IT will come and fix.
Hopefully most of my J experience are better than that.