Arm rests up or down, please do try to keep body parts out of the aisle, feet ESPECIALLY. I'd hate to roll a 300 pound cart over your little toe. We can't always see in the aisle due to lighting, what we're carrying or pulling the cart backward. I know the seats are narrow but the aisles are even narrower; crew and PAX alike need them to be clear so no one gets hurt. I don't know how many times I've almost eaten doo-doo tripping on feet.

I'm WELL above average height and, while it's not as comfortable as splaying my legs in the aisle, I manage to keep all parts out of the way - so I know it can be done.