You can link inactive AP vouchers to your
MDE account to store/hoard

them.
my schedule for going to wdw varies. last year we did 4 trips from sept to sept. this year its going to be feb (2018) to feb (2019) with the bulk coming late 2018. renewing wouldnt be worth it seeing that i will lose oct-jan, if sept is my start date in renewing. unless i am figuring wrong.