I guess we'll need "different" tags so that we can write our cabin number on them? Or, do we just not have any tags on them and let the pier porters do it all?
The luggage being checked with the porters has to have more detail than simply your own name tags. Actually, when using hard copy docs with RCI, they send pre-printed luggage tags with your name, cabin number, deck, etc., on them. However you may not get them with e-docs. E-docs usually have tags that you can print at home and staple on your luggage handles. Most people think these are useless since it is just printer paper. I used to think so too. However, on our just completed cruise I purposely checked a bag and used the tag I printed at home. I folded it per the instructions, stapled it together, and it made it to our cabin still attached to the suitcase. Please note that we drove to the ship and so the tag was not abused. I cannot recommend using the home-printed tags on baggage you then turn over to an airline for flights to the ship.
The fail-safe way is to just ask the porters to tag the bags. They won't accept your luggage unless it has a ship's tag on it. They will have blank cardboard tags that you can fill out. Put your name and cabin number on them.