I belong to the view of whoever has the window seat controls the shade. I like the window seat, I also like to look out the window. I purposely choose my Sept flights so that my window seat would be on the north side of the plane. So I could see out but would not have direct sunlight glaring in on me.

On the way to London my flight becomes an overnight due to time zones and us arriving at 9 am the 'next' morning. I will probably have my window open part of the time and closed part of the time.

If I was asked politely I would consider it, but I reserve the right to open it again if I want.