Not only do you NOT need the specific book, you may not need any book. We stayed at HRH Sat-Wed this past week and were never asked to show our card. I would have one...just in case. Plus, it's a great discount book. We have owned them for years.
BTW, the hotel was great! Until checkout anyway. We had charged everything...EVERYTHING...to the room. My wife had returned a couple of items and they were supposed to credit our room account. The credits never showed up on the "account status" option on the room television. We called the front desk and they said they could fix it at checkout. When we went to check out, our clerk laid into us about how they should have fixed it when we called. "Next time, make sure they fix it when you report it. Now, I have to call my manager.....blah, blah" She made us feel stupid and blamed us for delaying the line. She came really close to ruining the Hotel's service reputation on our minds. It was her...not the hotel... that made us mad.
Thanks for letting me rant for a sec.
AF