Paul & Darryl,
you miss the point, I'm afraid. NCL's new "service charge" policy is so intransparent that it is actually not possible to see who is getting the money. When asked whether 100% of the service charge would be given to the employees, NCL decided to not comment.
Hence, I stand by my opinion that the cruise lines should pay their employees decent wages (even if that means increasing the fares), and that gratuities should be what the word tip suggests - rewards for more than average service and not the kind of "moral blackmail" they are today.