I have been unable to find a walk in location to get the flu shot. Today I tried Walgreens, Rite Aid and CVS in my neighborhood. They all require an appointment even though they were clearly not busy (if they were visibly busy, I wouldn't have asked). Closest is Walgreens and they offer appointments only between 3pm and 5pm. I usually leave work at 6pm, so don't get back to my neighborhood until much after 6pm. 🤷♂️