Hard to say. EF #s posted below.

Working for you is PEY seems to be relatively busy (based on seatmap), but they're still selling the full complement of PEY seats perhaps in anticipation of op-up. J class on the seat map looks so-so, not too busy but busy enough that I class is reduced. I'm not an expert here but I feel like they'd way rather sell PEY and then take your miles to move you to J.

Unfortunately, the general vibe of the board is that mileage upgrade tix are in a different bucket than straight award. Sometimes they're available when regular awards aren't, and other times IIRC they're NOT available when straight awards are.

CX 246 0 CPH
06/11/18 2:10 PM HKG
06/12/18 6:30 AM 359
M,W,F
NA / NA J9 C9 D7 I2 W9 R9 E9 Y9 B9 H9 K9 M9 L9 V9 S9 N9 Q9 O9