Trying to book reward travel for mid September. Flights are not finalized yet. I've checked my desired dates over the past couple days and in addition to the 45,000 points/night at the Category 9 hotels, there is an additional cost at the "Reward" rooms available at these hotels. Additionally, these amounts have seemed to change over the past couple days (could be based on rooms available?). Has anyone experienced this? Any chance of the cost decreasing if I wait? I hate to have to spend a lot of extra money in addition to using my rewards points. Any hints or suggestion anyone can share would be appreciated!