We just returned from WDW, and found that we had to take the stroller (tandem double), folded, onto the bus through the front door. Unless there were seats available up front, my dh had to lift the folded stroller over the seats to get to the back of the bus. It would not fit in the aisle, even when folded. I thought on our last trip ('98, before kids) that people were allowed to take them onto the buses through the back door...
Betty
Betty