The link I posted a few days ago regarding not being able to order luggage tags as of 8/8/12, is not a hard rule yet.
I will be on the Liberty OTS in October; one of the pax spoke with a RCL representative and was told we will be getting luggage tags for the Liberty. They are starting to roll it out on all the ships, but Liberty will still be using luggage tags as in the past.
So maybe enjoy the tags for a little while longer.
O F C'er