No, it's for luggage, not humans.
Luggage Valet covers getting your luggage from outside of your cabin to the airport (so the next time you see it will be at your home airport.)
It means that when you leave the ship you won't have to claim your luggage in the cruise terminal, drag it through customs, load it into and out of a cab or wait in line to check it in at the airport.
It's the best $29 you will ever spend.
NOTE: It's $29/pp and covers 2 or 3 bags per person (I can't remember which)
If your airline charges for bags that will be an additional charge.
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