If they went by way of the traditional FP+ and DAS, with the attraction still breaking down frequently, the FP+ queue could become 1-2 hours long, IMO. So, would your children, after having to wait hours for the DAS time to come, with no other DAS access, be able to handle a long wait in the FP+ queue? Right now, you can get the BG, use DAS around the park, or leave the park, go to another one and use DAS, and then come back for the boarding group and have very quick access to RotR. The traditional DAS is going to tie up your access for hours, even worse than FoP ever did.