I had feeling this was going to happen. While I don't live in one of the metro areas on the map, I recently had an order that I received the next day, although I chose 2-day shipping.
Recently, I've had that happen frequently—probably 50% of the time. Makes it difficult to time orders when I'm trying to receive something covertly on a day when I'm working from home (and my wife is not). I've ended up paying for overnight shipping just to ensure that I have the timing right.