forgive me, but i haven't seen anyone indicate short/long haul or Y/Premium cabin.

Keeping the shades down for the sake of others is basically fruitless in economy.

In F/J, even on day flights, I enjoy a dark cabin. Maintains an air of ambience to only have overhead lights on narrow-body planes. There is nothing worse than that ONE passenger who insists on looking at glaring white clouds for three hours.