In conclusion, the universe wants you to relax. The post office is closed on Boxing Day. Put that package down. Step away from the tape. Instead, use the day for what it was intended: eating cold stuffing straight from the dish, arguing about who ate the last chocolate, and wondering why you bought those pajamas with the feet in them.
If you absolutely must return something, wait until December 27th. The line will be 45 minutes long, and you’ll be surrounded by people who all made the same mistake. It’s a bonding experience. You’ll share a collective groan about Aunt Brenda’s sweater. And by next year, you’ll know: Boxing Day is for boxes, but not for boxing them up. At least, not at the post office.
Now, go enjoy your holiday. The mail will survive. Your willpower might not, but the mail will.