Even though it may hurt my chances at getting a future drop, I will drop a little 'how to get a St. Nicks exclusive' wisdom. I'm three for three on my successful attempts I'll tell you whats worked for me.
I've bought all three with my cell phone. 2 on wifi, one on cellular connection. Having decent wifi speed will never hurt.
I start hitting the refresh button every minute starting at 5 minutes till drop. Sometimes drops happen earlier than advertised. Hit the refresh button, right as the clock strikes the time.
I always enter all my info manually, I know auto fill might be faster, but it isn't broke so I don't fix it. Do what works for you in that regard.
TLDR: The real secret here, is to realize that having it in the cart means nothing, until you finalize the order and get a confirmation number, it's not yours yet.
So with that in mind add to cart, check out, enter info, and hit submit as fast as you can. Here's another tip, as long as you enter payment info correctly, and you get your confirmation number, you can call the store and make changes to your order after you've secured your spot. Upgrade shipping, change an address number you got wrong, add another knife to the order, what ever.
Anyways hope that helps
Good luck spyderfans.