and I asked CRO about that and I was told that once the 60 day window closed, they would not offer any rooms at the discount. I've also heard from other people that if there is availability, they might give it to you so it can't hurt to call and ask. Just remember that you must call between 2 and 5 PM EST to discuss BRP rates with CRO. They can't access anything before that time.
Good luck.