I would imagine the government would institute some controls on what people can and can't do in regards to pricing and hoarding with the one week lead time. I think it is better than overnight for the thought experiment. Waking up with a billion dollars and knowing you are getting a billion dollars a week from now are two very different things. What controls would gov need to put in place, what are the geopolitical consequences (other countries own a lot of treasuries and dollars), if controls were in place in US but not other countries would people be flooding out of the US the week before trying to purchase every desirable good and property possible in other nations?

I think it makes it more interesting that people know it's coming.