It depends on the CM at the desk.
Very often, my husband is unable to join us for the whole visit. I tell the desk when I check in...give them his name, etc. and when I expect him to arrive. Sometimes they give him his key, sometimes they don't! Once it was just luck that we came back before he had to wait too long. Since then, I've always planned on being back at the resort to meet him.
I also checked in two friends who were sharing a condo with us at BWV...however, it was under my name, and I just gave their names to the clerk. I was unpacking in the villa a few hours later when they arrived with a bellman and their own keys.