SO MUCH THIS which is why I keep repeating myself that this is a fluid situation because there are SO MANY components to getting the resort open. Once Disney sees something working or not working, the plan can change again.
I only share this so everyone is prepared - nothing worse than getting a call and be caught off guard. Take this info, process it in regards to POTENTIAL affects to your stay and be ready for whatever comes down the pike. Have your questions ready !!!! If transportation options are important be sure you ask all those questions about what will be available (and take names so if that ends up not true), ask about dining options at your resort if dining there is important ......... I am only trying to prepare you for what MIGHT be happening during your trip so you are ready with all your questions.
AND if they call to cancel you - press for what they will offer you on an upcoming trip, I'm sure they are ready for that question, so be proactive.
All I've heard from multiple sources is that they are using CSR. I believe another CM posted that it is actually blocked on on their hotel schedule for them. NBA Reporters are saying CSR even as late as yesterday. And it makes sense, it is a much nicer resort, the new tower, lots of dining option, convention space that could handle work out equipment etc. AND it is a much more secure resort. If Riviera is open, CBR is not secure. The last thing NBA wants is fans wandering in to the resort.
This is consistent with reporting that guests will not be given a choice. I think it is because they are working hard on each reservation to see what they can fit where while maintaining their plan for the hotels. Allowing guests to choose is simply too big a complication.