Don't do it and never will. I know some people on the DIS swear by it, but all I've ever seen is confusion and frustration when seeing guests at the parks using it. I don't need that on vacation.
That is exactly what I think and I think you said it the best by the way I don't use it either, and I think next year will be worse because it will not include apps or tip. So were is the value?
We used it 2 years ago, but decided not to this year. We ate way too much. But it did give us the opportunity to eat at places that we normally wouldn't so that was a good point!!