Apple will likely send you a tracking notification tomorrow. But I too have two iPhone's coming Friday and while the order update page with Apple shows preparing to ship, I have a UPS My Choice Account and last Friday night, UPS sent me the tracking numbers for both phones. I can tell you, they have traveled from ZhenZhou China, to South Korea, the Anchorage, Alaska and both of my phones are now in Louisville, KY. When UPS moves them from distribution centers, like the Louisville center, you'll receive the tracking notification from Apple. So don't be concerned. Your phone will arrive Friday exactly as scheduled and promised.
If you can't accept the package, you'll have two options with UPS. Sign for it and they'll leave it (not a great idea if you live where someone can take it) or redirect it to a UPS Store or UPS Distribution Center for pickup.