Originally Posted by
TopBunk
Go for an 'A' seat.
I agree, but for a different reason.
When you arrive in SYD, there is a chance that your approach will be from the north. If so, there is the most spectacular view of the Harbour Bridge, the Opera House and then the city centre from the left hand side of the aircraft. If you've never seen that before, it's worth grabbing an A seat for that chance.
Otherwise, I always go for K seats on 747s. The right hand aisle usually unloads faster than the left hand aisle. It's to do with the merging traffic from upstairs, which decants into the left hand aisle.
Originally Posted by
Pax Vobiscum
To answer your question, it's usually because they don't want to be disturbed by someone clambering past them to get to the toilets.
Personally, this is exactly so. When I sleep (which is my number one priority on long haul flights, anyway), I do not want to be woken up by anyone wanting to get out of their seat. If I can't get a window seat, I will often ask for a middle block middle seat to achieve the same result.