Sorry I can't help you, but if you are able to access the chat feature through DVC, they should be able to give you the answer without waiting for a response here.
I think there is only one accessible cabin with a rollin shower. We had two lovely three night stays in it in September and December of 2017. I don't recall the # but if you are facing the lake, it is the second cabin to the right of Reunion Station. Hope that helps.
Sorry I can't help you, but if you are able to access the chat feature through DVC, they should be able to give you the answer without waiting for a response here.