Very unlikely for opup, but I would have thought reasonable chance of miles upgrade at check in. But of course 10 March is still a week away and a lot can change.

Will08's remark is quite valid, I think. Many people who ask for these 'load checks' (which they are not anyway), do not understand the meaning of the numbers.
All it says is how many seats the airline is willing to sell in the fare buckets concerned. And the significant thing is that Y9 means 'at least 9', it could be 200 as far as we know. '9' is the maximum number for economy fare buckets, and '7' for business and '4' for first (that's for EK and most other airlines but it can vary a bit).

Here ends the lesson.....