The Van Nuys Staples store we went to did an AMAZING job as well!
The manager was super nice and at 5am made an announcement to everyone in line about how things were going to work when the store opens. He then came around to everyone passing out the vouchers for each individual's requested items, and also specified where items were located in the store for those items that did not need vouchers. Other employees passed out donuts!! TWICE!
Every 15 minutes, the manager checked thru the line to see if there were additional questions or voucher requests. He was patient, kind, and very helpful. At 6am, we were let into the store in groups of 10 every 5 minutes. There was plenty of staff inside to assist everyone and the shopping experience was very pleasant!!! I got everything I needed in a timely and respectable fashion.