Thank you for this. I feel that MoCruiseFan insisting the DSC has nothing to do with tips is misleading to new cruisers. Of course it does. The DSC was invented to make it easier for the cruisers, so they do not have to run around the last night with tip envelopes. That said, I do tip drink servers and my room steward extra, and wait staff when I do my free Sapphire specialty dining. It is true that, technically speaking, NCL does not call the DSC tips.
I also like to hear what others tip. It gives me a general idea of where to start when I do choose to tip extra. It would never occur to me to tip for laundry, but I kind of like the idea of leaving five dollars in the basket when my laundry is returned promptly and in good condition.
I try not to get involved in tipping threads, but sometimes just feel the need to state my opinion.