Gardener's Supply Company shipped out the package on Monday via UPS Next-Day Air. It's Saturday, so where is it?
UPS.com lists the package with a "Rescheduled Delivery" date: today. During some investigation a UPS employee told me that this is really code for "we lost your package, recovered it Friday, and are shipping it today." Normally, aside from my annoyance, this wouldn't have been a problem -- except that I'm leaving the country tomorrow and UPS doesn't deliver on Saturdays here.
Serves me right for cutting this so close. At least they're refunding the difference of the next-day shipping, a service which I did not receive.