You can just call and say you want to check rates for a couple of programs you are in, then ask for Ent Rate, AAA, All Access. They'll see what's available and when.
IF you pick All Access, then you can go to the Hard Rock site and sign up. I don't know how long it will take to get the card, but I would bet you can take your confirmation page with you to check in and no one would give you a hard time (ugh).
Of course, you know that the All Access card costs 24.95, but comes with a $20 CREDIT for the Hard Rock Cafe. So you'll have lunch one of your days down there for free/cheap...
I really don't know how the various discounts compare. If anyone knows, please post!@!!!! I know Ent Rate gets sold out, but All Access is still available.
I'm curious to find out how the Fan Club compares. And of course, if anyone knows - how to get a company signed up... guess I'll do another post if non one answers these questions soon!
Elaine