I made our reservation on 1/9 and didn't receive the confirmation in the mail until 1/24. I was getting worried because in the past it's come within a week. Also. it was in a white business envelope not the larger yellow envelopes of the past.
I called CRO on 1/23/04 and asked to confirm my res. since I hadn't received my confirmation letter, booked 1/6 or 1/7. They said they would send out another - I think that was a cover, as I have read several posts here about people not receiving confirmation!
In the past, I have received papers within 7-10 days.