I have found the KLM Tokyo Office very co-operative in assigning good seats on my flights from NRT>AMS (in stark contrast to the NWA Tokyo Office)

When I first took the new KLM 777-200, I called up and asked the KLM agent if I could have row 10 (bulkhead) but she recommended me to 11C and said 'This is thought to be the good seat in economy' ^ ^ ^ so you really should sit there.

It was great to have that extra leg stretching room on both legs of the long 6000 mile flights to Europe and back.