Priority is not guaranteed. Period. They actually guarantee nothing if you really make them tell you the truth. I just sent a Priority pkg to Washington State, same customer as before. FIrst time, it took 2 days, second time they messed up badly and sent it Parcel Post, even though I paid Priority, $16 worth. Took one week. The Postal "Service" gets away with what I consider fraud daily. You can't file a claim unless you sent it Express. I even heard Postal people talking to each other and they said overnight is not guaranteed overnight because they were losing too much money in claims. Yeah, do your job and you wont have to pay claims, right? They take higher prices for services they don't care or really intend to deliver. Sorry to all you postal employees here.