A:AnswerUse all emails and Iclouds associated with what you using on the old Ipad but note by updating the new Ipad, all the old stuff will fill up the new GBs space, unless you don't mind to do that or tranfer information from your old Ipad by plugging a adapter cord to a laptop or computer then transfer the information back to new Ipad the same way.
A:AnswerBest Buy offers trade-in, Instore only I suggest you to please visit any of the nearest store, as the store team will validate the physical condition and help you with the Trade-in value in form of Best Buy Gift Card, you can use the Gift Card towards any of the purchase from Bestbuy