To clarify on the split stay. As others have said, if you do a split stay, you can get the
DDP for each section separately. But there are some caveats. The credits only apply to that portion of the stay. So if you booked 4 nights then a separate 3 nights, the DDP would only be good from the time you check in (go to the front desk) to the applicable reservation until midnight the day you check out of that reservation and NOT for the entire you you are there. This can be a great way to use it also as you can get the DDP for a portion and have extra time to use all the credits as well as target the credits to the more expensive options. The other caveats only applies if you make 2 separate reservations at the same resort for the same unit type then link them. After linked, they are treated as one reservation. This doesn't apply to different resorts or even truly different unit types in the same resort which can't be linked.
Booking a split stay can be a good way to get the DDP for a portion of the trip OR when someone will join you for part of the trip but not the entire trip and you don't want to have to pay for that person for the total number of nights for your trip.