On our last trip in October 2010, we stayed at OKW, but I walked to POR and PO New Orlean to see if the bus stops had the box for scoot size parked there. I went to the stop by the check in area at both resorts. There were no specific marked lines, but there were areas marked at each stop for the different destinations. I don't remember if any were combined stops where buses for several locations stopped (like MK and Typhoon Lagoon).
People did seem able to figure out where to stand.
I have not been to any of the other Moderate resorts lately, so can't tell what they are like.