This was my experience as well from 11/16 to 11/23/2018.My experience is Disney Springs is sometimes all 5. MK is usually alone, AK is Swan/Dolphin.
I have always seen them share with all 4 resorts, we usually get off at Swan/Dolphin and walk home.
Coming from ds in early nov they stopped at all 4 resorts before bw. It took an unreasonable amount of
time. If this is the policy in the future we’ll skip DS.