I see service charges and fuel surcharges as a way for the lines to make the cruises to continue to appear to cost considerably less than they actually do.
10 bucks each for fuel and tippping....40 dollars per day per cabin.
That fare of 560.00 for a 7 day cruise is a total of $1,120.00? Nope.
Add 280.00 to that and it looks different at 1400.00
This example added 25% to the cruise cost before you charge anything to your account.
BUT...I strongly believe in tipping well for good service.