Whichever plan you get must be the same for the entire length of stay - and for every single guest on the reservation. It's pretty much all or nothing. The only way you can mix and match the plan is if you have a split stay and choose one option on one reservation and another option on the other reservation.
You can break your reservation up into two reservations, but you will probably have to move for the second reservation. They cannot be linked because that makes them one. You will have to check out and check in again.