Hmm... let's see.
Get out of work at 5pm
Drive 2 hours to an Apple Store
Hope they have Snow Leopard still in stock (chances are they do)
Spend a few minutes checking out the Apple store and standing in line
Drive 2 hours home
By now it's 9:30pm
Time to install Snow Leopard
Spent money on gas and get less time to use Snow Leopard
OR...
Pre-order Snow Leopard
Get it delivered to my work on "Launch Day" (tomorrow)
Get out of work at 5pm
Drive 10 minutes to my house
Start installing Snow Leopard at about 5:15pm
Enjoy using Snow Leopard the rest of the night
I like the second option better.
I wouldn't consider a 2 hour drive being 'close' to an Apple store so the second option is obviously the best