So I received a 64GB Pro Max midnight green on launch day. First time using apple UP. I've always used 64GB but maybe just maybe I want 256GB. In any case whats the best way to do this? Call apple or go to store? Now I do see 256GB midnight green every morning available in Miami stores. So basically I would have to find one early in the morning before my 14th days are up to make the exchange? How would I go about this? Am I better off returning this one. Then placing new order and meanwhile use my back iPhone SE?