We've stayed Club level 4 times, and these have been our experiences with being met vs. not:
BWI CL, we drove ourselves--met out front when we pulled into the porte cocher (I think I'm spelling that wrong! You know what I'm talking about, right?
) by a CM who escorted us upstairs, checked us in, and showed us around. This was at approx. 4 pm
YC CL, took ME--was not met up front. I asked a CM where I should go for CL check in and they sent someone down who brought me upstairs and checked me in. This was at approx. 10 am.
BWI CL (2nd time), we took ME--was not met up front. Asked a CM in the lobby where we should go for CL check and they said the regular check in desk. This was at approx. 10 am. Honestly, I was pretty disappointed in this.
WL CL, we drove ourselves. We parked in the normal parking lot and as we walked up to the hotel, we saw a CM standing up front holding a sign (tablet?) with our name on it. He brought us up to CL and checked us in, showed us around, etc. This was at approx. 4 pm.