Hi folks, I'm planning to return my Retina iPad Mini (got an Air instead), but was unable to get to the Apple Store due to the freezing cold in Chicago. The return window closes on January 7th (tomorrow) and now I'm out of town. I'll be back on Friday. If I choose to initiate a return before the 7th through the online system, how much time do I have to put the Mini in the mailbox? I assume there is a fixed amount of time, otherwise people would get more than 2 weeks. Thanks!