Apple:

Q: I want to return a product I recently purchased but the 14-day return period will end before March 28—what should I do?

A: Don’t worry. We’ll accept your return up to 14 days after we reopen. Exclusions: Contracted iPhones (US, CA, JP, AU); Carrier financing (US only); Trade-in devices (value of device can be given in form of gift card)

This and several other questions answered on Apple’s page.