You will 'most likely' be grouped with YC/BC. I've taken DME to BC and BW several times now, and that has been the grouping. We even stopped at the Swan one time...at the time, if you booked through Mears, and paid, you were put on the DME bus. I actually overheard this family, that was getting off at the Swan, say what a great way to get to WDW for such a cheap price!!! Should have seen her face when the passenger in the seat ahead of her turned and said.."And if you stay at YC you get it for free!!!" Poor thing thought she was being gyped. I explained how DME worked and she felt better.
But, I digress....it should take you about 70 mins (give or take a few) from deplaning to your resort....a bit less if you are the first stop, a bit more if you are the last stop.