I saw the shuttle for the RI Anaheim. It always seemed to be picking up/dropping off guests. We were staying at a different property and I remember wishing our shuttle came as often as that one.
I think there is a brand new one that just opened within the last couple of months - I've heard GREAT things about that one. We stayed in one several years ago and even then we felt it was showing it's age - so unless they have done some updating - I wouldn't recommend it.