Pete-
Prayers sent for your rapid, and complete recovery.
I write, with a stylus, the varietal name on those copper tags, but use a thin, BRASS ball-chain to secure the tag to the tree, usually hanging from a lower, thicker, branch. I don't use the thin wires that come with the tags. The BRASS chain will not break, or corrode, and the tag stays with the tree, even if you repot, or, replant because the tag cannot come off the thicker branch. The tag will hangs there like a little I.D. necklace. The chains can be bought in Hardware stores, and are the same chains that hang from ceiling fans....just make sure the chains are brass, and not coated steel. Bring a magnet, to identify brass from steel.
Good luck, and Happy Thanksgiving.
Frank