This may be presumptious ... I would look for language that the offer
is NOT going to be deducted from account. Otherwise, call and clarify
before booking ...
I had 2 different offers from Pepp. One was mailed to me, the other was a coupon on the handout they'd given me at the slot club desk when I first visited. I called up and gave them the offer codes and asked what the difference was. The reservation person on the phone was clear and helpful in explaining to me that one was a bigger suite, with the offer deducted from my comp account, while the other was a regular room, but completely free. I may have missed some fine print, but I really don't think there was any way for me to know without asking. So a call to the Pepp is a good idea.
Stuart (RandomStu)