OKAY, SO I KNOW THAT IF ONE COUPLE IN A ROOM HAS THE DINING PLAN THE OTHER COUPLE HAS TO HAVE IT TOO, BUT, IF ONE COUPLE HAS THE DELUXE PLAN CAN THE OTHER COUPLE HAVE THE REGULAR PLAN??
We just got back from 5 nights at VWL and had the deluxe plan for 3 nights followed by the regular plan for 2 nights. We were able to keep the same room - I just had to checkin/check out after the 1st reservation. This takes a little bit of planning if you are trying to maximize the credits but worked for us since we could not decide between the 2 plans.
There is a possibility when the new reservation system goes into effect later this year, that you will not be able to have different DDPs on a split stay.