Pre-ordered iphone 7 with trade-in iphone 6
My husband and I went to At&T store this past Saturday to pay off our current phones, pre-order the iphone 7 and 7 plus and trade-in our current phones. We understood that my husband's iphone 7 will essentially be free with the trade in offer of $650 and since i ordered the 7 plus, i will also receive the $650 credit but will have to pay the difference monthly. The associate gave us 4 receipts, 2 for the paid off phones and 1 for the mini ipad we purchased and 1 for the pre-ordered phones. Looking at our receipts, I also noticed he added an insurance mobile pack as a line item in our order. I asked why? and he said it is required because our iphone 7 is going to be shipped to us and i can cancel the insurance any time. Nothing in our receipt indicated that we are doing the trade in. He said I will receive instruction in email about our trade in and how to mail them. I asked if we can go back in the store upon receiving our new phones and activate them there and turn in our old ones. He said the trade in has to be done in the mail.
My concerns are:
Is it true we need to add the insurance because we are pre-ordering and the phones will be shipped to us?
I have not received an email about the trade in instruction. Should i have it by now or need to wait for the iphone 7 delivered?
Is it true we cannot just turn in our old phones in the store once we received the iphone 7?