Upgrade Question

All,
Thanks in advance for your help. Here is the situation:

1.) I am giddy with excitement to upgrade from my cracked screen 3G to the 4.
2.) My upgrade date is 1/12/2011 (2 days from now )

What is the best way to get the iphone4 the fastest and get the fully subsidized price? If I walk into the Apple store tomorrow night (1/11/2011), which I assume is considered early, will I be able to upgrade at the 199/299 price point?

I guess my questions are "How tight-assed is the upgrade date?" Will I really need to wait until 9:00AM on Wednesday to upgrade? Am I able to sidestep any of this red tape by ordering online/with in-store pickup?