On a recent 30 day HAL cruise we gave our cabin steward a generous tip in the third week assuring him we'd also do the regular 'assigned' tipping on the last day.
We were window steerage. I wonder if it's considered a promotion to serve on the higher decks where the more expensive cabins are. Are bigger tips received from wealthier clients? Our steward appeared tired and discouraged when caught off guard, but then always put on a cheery face when he noticed us.