mattbob, the promotions are run by the hotels, and we have still not gotten word to date from them. I apologize for not getting back sooner. There are other promos with the same dates/prices (i.e. Fan and Follower Rates). If this is still an issue. I would suggest trying different browsers at different times of the day. We just ran another test here and were able to successfully reserve the room on the dates you were looking for. If you continue to have issues, we suggest trying to contact Harrahs again, and maybe you will have better luck than we did.
Thanks