I'm not sure why one would need to proceed directly from one resort to another when doing a split stay. We just have bell services take our luggage in the morning at our first resort, then go directly to a park for the day. Sometime after the 3pm check-in time, and at our convenience, we go from the park to the new resort and check in. Bell services will then deliver the luggage. Why hassle with resort-to-resort travel, or more improtantly, why waste the better part of a WDW day moving with your stuff?
Two reason I can think of.
1) We have a breakfast scheduled at our new resort at 7:45.
2) For those getting the
DDP at the new resort, they may need their credits before proceeding to the parks. Can't get credits until check-in.
For us, we won't be waisting a good part of the day. We'll leave AS Music at 7:15 and proceed to AKV. If time permits, I'll check in before breakfast. If not, I'll wait till after breakfast. Then, we'll go to MK. They open at 9:00 that morning, so if we can get checked in prior to breakfast, we
may make it by rope drop, if not then not long after. Then, we don't have to worry about going back to the resort mid day.
Also, we'll be getting the dining plan. Of course, people doing split stays NOT on
DVC/AP probably won't do this since they would have to buy an extra ticket for the dining plan. Anyway, we plan on using some of our credits from AKV for lunch. I would think the credit issue would be the main reason people would transfer prior to going to the parks.