When we stayed there in 2001 we needed to transfer to the ASMu. They were very friendly, but they told us that since they are not affiliated with Disney we would need to take care of that ourselves. We ended up having them call us a taxi. They helped us with our luggage at least.
I guess I can understand their policy, but the extra cost of a taxi was no fun. I don't remember what it cost us, and I don't think it was too much, just that it was an expense we hadn't counted on.
Hope this helps!
Lola °Ü°