is this guaranteed J booking benefit indeed not as good as before now? because, out of my 20+ years flying with CX and at Gold/Diamond levels for most years...I have used this Y or J booking benefit many times. I know now it doesn't cover as many subclasses as before...but a few weeks ago it's the first time ever that I was turned down completely on a full-J class booking guarantee request when booked 24+ hours. when I talked to MPO, they said, the flight is too full and we can't guarantee you the J seat (or even Y). I said, isn't it indeed the point, that I can get guarantee when it's full, the agent and then the supervisor told me, yes, we can guarantee when it's "full", but now it's "too full"...(and the definition of "too full" of course is their decision)...

many of such DM benefits, published or not, seem to be getting not as good...haven't been able to get redemption seats much these days for the past half year or more, not much more opening up seats for DM, even when in the flight eventually I could see lots of empty seats remaining. and now even this guarantee full J seat isn't working when I most needed it...first time ever. hope it's not a trend...