Which is one of the reasons why on those flights which CX has anticipated that they won't be flown on their metal, that all premium class seats are 'blocked off' from sale - ie no P or J class seats. They will show that the rest of the aircraft is available but J and P is full! I guess CX figures that just moving the mass majority of tour groups who travel in Y class is the main concern. They somehow forget that there are Gold and Diamond MPO members in the back too. But I've heard that they'll just endorse you to any carrier that'll get you quicker to wherever you want to go!