My local (35 miles away) Apple store got another delivery today. I rang them on the off chance this morning & they told me they had some more, so I just headed down to gt one.
The store was pretty packed & obviously people with reservations were getting served first.
For those that didn't have a reservation, there were two queues outside - one for purchases with a contract, one for sim-free. Everyone was personally being seen & taken into the store for their purchase within 15 minutes.