You still print your luggage tags on the website and your travel summary, as always. 75 days before travel it is available.
I would definitely print and attach them, so it is ready for the baggage guys to load. IF for some reason, you don’t do this, the baggage handlers to have the capability to print them or hand write it on a tag. Another reason to have your travel summary, so they can see your cabin number. But, some ports don’t have the capability of a printed luggage tag. Why would you want to wait around for this, when you could be on your way inside the terminal to checkin? NOT..