I paid for 2-day express delivery on the 8th, and on the 13th it still has not arrived, but is being re-routed away from our local post office, the tracking says. I have no way of reaching USPS to pick it up, and I’ve seen elsewhere that it has taken weeks in some cases before USPS delivers. Meanwhile, we are receiving other packages via USPS on time. There is also no way of reaching Piper directly to get talk with someone and get help with this issue, only an online help request form with an automated response. We’re leaving overseas for the holidays over the weekend, and I’m really regretting this purchase right now.
Update: Piper support has worked hard to take up the slack from USPS, and has sent the package on express delivery. Fingers crossed!