They had a lot of time to figure this out! If it were me, they should have had a signup that you could do where you put in your information (age, occupation, health concerns, etc) and then you would have the option to select different vaccine sites you would be willing/able to travel to. When there would be an opening ready, you get a notification and get your shot. I mean this is done at the place I get my haircut; obviously on a much smaller scale.