With the new key system in place, there is added functionality in terms of them being able to remotely grant access/permission to a specific RFID... however, the RFID receiver has to be a network ACTIVE RFID receiver, and room door locks are only only local active modules.
So you will have to make a trip to the front desk every day that your reservation changes - or have it worked out in advance for them to deliver new room keys.
I really hate to say this, but I really think your week is going to be a huge pain in the rear end in this aspect. Points from that many members to make a week's worth of reservations....
I cringe when thinking about all of the STANDARD things that Disney has been messing up on recently with all of the new changes and such happening as a result of the new RFID system.
I would call the resort in advance of your trip and speak to a manger if I were you - this is really your only hope of the resort doing ALL it can to make this string of reservations an end to end reservation - and giving you ONE key at the beginning that will last your whole stay.
Another element - dining plan, room charges, credit cards - if you have the dining plan for your trip, you REALLY have to use each and every credit each day to assure you don't loose anything when one reservations ends and another begins.
With room charges, each time a reservation ends all of your rooms charges will be applied to your credit card - if you do not have a credit card on file and charges could accidentally be billed to the member.
You are really going to have to dot your i's and cross your t's on this trip.
May the force be with you! HAHA