Hi...been a long time since I've flown AC long haul (actually, think it was when the original Dreamliners were being introduced, as I remember I was supposed to be on ZRH-YYZ on one, but it reverted to a 333 (I think) last minute.

We're flying on AC 3/4 this summer (YVR-NRT-YVR). Aircraft are showing 789. I noticed when selecting seats, and cross-checking on EF, that the first few [non-bulkhead] rows of Y (19-22) are shown as 'blocked'. I assume this is done on all 789 flights?

Is there a reason these rows are blocked, or any way to get access to them? Would love to be in a window 'block' more toward the front, but right now, nothing ahead of 37. Would I assume these would at least be up for grabs during OLCI?