Hey All- first of all, can someone tell me what BTO means?

My 15 inch mbp stock 512 just got a shangai departure scan



, purchased 1.5 hrs after keynote, LA arrival updated from the 18th to "by the end of the day on the 17th." I contacted apple yesterday and asked them to hold at a local pick up hub so I don't miss the package.
In the ups app and I can't figure out what hub it is going to, or if they got the message from apple and it will indeed be held there. Any experience out there on picking up apple packages from ups hubs? How do I find my hub?