Asking this here since I rarely visit any other portion of the site anymore and I know that someone here will have the answer.
I was looking to set up a new MagicBand for my little sister.  My 
MDE account gives me the opportunity to set up 3 MagicBands for marathon weekend.  One for myself, one for my sister, and an AP one for myself. 
I figure I'll just use the Star Wars one I got for this year's Dark Side visit and decline the regular one for myself. 
Is there any reason why I would want to receive an AP MagicBand or is just a new MagicBand that has my AP coded to it?  My pass will expire in April and I will not be renewing as I do not know if I will ever again visit WDW twice in a 365 day period.  I think my main Star Wars band from April already has my AP coded to it.