One other thing about the crew KNOWING OR NOT KNOWING if the auto-tip has been removed. Officially the cruiselines, all of them, say the crew is NOT informed, even tho it has been seen to happen.
The ships crew numbers 1000 to 1200. But ONLY 3 or 400 of them are involved in tipping. The rest are salaried. The people at the Pursers desk DO KNOW when tips are removed. And the people that receive tips also know the Purser's people know! And they ALL live together on the ship. The eat together, they relax together, they drink together, and spend beach time together. To think ANYONE doesn't unofficially know that tips have been removed would be incredibly naive!