I would suggest one step further to order the shoulder strap now as a separate order (orders all today get combined shipping and shipping cost today per prior blog or forum post by Darcy).
Then at the debut time, can just focus on refreshing page to get your item.
Have your items loaded in wish list with credit card on file is a quicker process than ordering thought the product page IMO. Also doing the shoulder strap as a order now would allow you to have card on file. It is like a 5 seconds from "Add to cart" to "Pay Now" with all that pre-set ready.
Maybe I shouldn't list all the tricks, but we are good competition. Not that we should have to compete.