Many of us refer to the luggage tags as "arts and crafts", because their instructions tell you to print one on a piece of paper, then you fold fold fold and staple it over your bag handle. No thank you.
I go to the port, show a porter my Set Sail Pass so s/he can see my stateroom number (at the noisy port I don't want to rely on hearing b/c s/he could mis-hear it), they write out some plain sticky luggage tags, wrap them around the handles of the bags I'm checking with them, and I'm done. We're dropping bags off with porters anyway (and tipping of course), might as well have them give you the tags.