Not to Americans or any other country. As for Carnival, why did they cut theirs, ask the bean counters. Not large amounts, $100 for cruises of 7 to 13 days and $250 for longer ones. I can see Princess cutting it one day if the bean counters have a say in it, like the choccies at turn down and the Elite complimentary internet.
Why would you cruise with HAL anyway, on board spending for drinks, tours, speshul restaurants etc is over the top with the Aussie dollar so low, what is it 62 US cents to the Aussie Oxford Scholar?