I'm on my 14day cruise and trade in value for 300min is only $145, not $200. 😞 (See attached pic)   So doing the math: 13 x $25 is $325 - $145 is $180. 180/13 is $13.85/day.   Incedentally, for a 7 day cruise: 6 x $30 is $180 - $100 trade in is 80. 80/6 is $13.33/day.   So no savings for a longer cruise. 😞