I'm not a big fan of valet parking. Several years ago the valets lost my car key at a bar, turning a 20 minute drive home into a 1.5 hour journey. And the idiots had the balls to try and blame me for losing the key, since I removed my car key from the ring and kept the rest of the keys. They said it made the key easy to lose. Well, if I hadn't removed the key, they would have lost all my keys.
My response was they had only two jobs to perform as a valet service -- park the car without damaging it, and keeping track of the key! They failed miserably on half their job.
Needless to say, I avoid valet parking like the plague since this incident. I will park someplace else and walk before I give my keys away.