DAMN YOU BEAT ME TO IT. i litterally just got the e-mail and was going to start a thread. might as well add some info.
Dear Bonnaroo Fans,
We will start shipping Bonnaroo 2012 wristbands in May to the shipping address on your order. Paid in full orders will be shipped daily throughout May in the order in which the order was placed. You will receive a shipping confirmation email once your order has left our facility.
Please e-mail email@example.com no later than Friday, May 4th at NOON eastern if you need your shipping address changed to an address where you will be able to receive your tickets.
You will need to e-mail us the request from the e-mail address on the order along with the new address and your receipt number from your order confirmation.
If you have previously requested a shipping address change, and you received a confirmation e-mail of the change, rest assured the changes have been made.
I'm going to be traveling throughout the month, what happens if I'm not available to accept the delivery for an extended period?
They were pretty clear that you had to be there to accept the tickets. This goes to the wristband issue above. I believe when they sent out the email, they gave a phone number for you to call to change the ship to if you needed.
They said the same thing last year and I wasn't home. Granted my mail lady is very familiar with me. If you chose USPS shipping method, the most that would happen is they will leave you a card informing you of the delivery attempt. Then, just take the card to your local post office. It's suddenly painfully obvious that I shop online way too much.