Does anyone know if it is possible to pick up the park ticket portion of our package a few days early?

We currently have eight day hoppers as part of our Magic our Way (with dining). We are staying off property for a week before we check in at AoA. My MIL and mother will be with us and want to do to Disney with the kids and DH and myself.

MIL and Mother would be buying one day park hoppers. I don't want to spend that amount of money since we are going to spend a whole week at Disney and one day tickets are sort of pricey on their own.

Is there a way to pick up the tickets and add two days on? Adding two days onto an eight day ticket is really not that expensive at all.