Pickup or Deliver?
Apple still has not mass released the watch to its retail outlets as of this writing. However many of the stores do have the devices in stock. You just have to go on line, find the store and reserve to pickup. I did this and got my watch the same day. It was a fairly simple process to pick the watch, select the store (stores with the device you want are selectable), login, select the time you will be there. The process is pretty easy. Not all stores will have what you are looking for but you can check back each day starting at 8am.
Or you can just order direct from the Apple Store and they will deliver the watch to you in 1-2 weeks!