Which airline are you traveling?

From my experience when I was traveling on NW metal through DTW but had my DL FF number in the reservation they already had it IN THEIR COMPUTER that I as a CRC member...they DO require ID to verify your identity. The CRCs have NEVER asked for ID...

If you are traveling on DL metal through a NW hub...your DL boarding pass will actually say "CRC member" on it...and that should also be enough to get you in.

Also at LAX I stopped by the CO Presidents club and sure enough they were able to look me up in THEIR computer and it showed them that I was a CRC member...so there does seem to be some sharing going on....

I'd definitely try to print out the temporary card if you can from DL.com, but I would be REALLY surprised if you are a problem getting in...

Good Luck!