There's an interesting arb I've found re the CRC membership for all you soon-to-be former PMs.

Your PM status is good till the end of February. If you want to keep your CRC membership alive for the next year at a low price, call DL right now and buy a spousal membership (I think the PM price is still $100, but it may have gone up a bit). If you're not married, buy it for your mother, father or sibling - no proof of marriage required if same last name.

When you buy now, you're spouse will get 12 months of CRC membership. But, because of the way DL codes the spousal memberships, your SkyMiles number should be flagged as a CRC member, too. While you won't have a CRC card with your name on it (but your spouse will), "CRC" will print on YOUR BPs - for the next year. So, you should be able to get a 2-fer for $100 (or whatever the prevailing price is).

I found this out accidentally when I went from PM to GM. I had some carryover membership from two years prior (one or two months) when I was GM before PM, but wanted to buy for my spouse while I was still PM to get the lowest rate. As luck would have it, they coded me as a member for the next year.

You wouldn't likely be able to get into NW, CO or UA clubs, however. (UA access ends for all CRC members on 2/29.)