The US has plateaued but its also Spring Break season, natural immunities are expiring of they haven't already and the variants are everywhere. The U.S is in a favorable spot buts there's potential for it to go bad. I think the middle ground will partially vaccinated people getting mild cases.
The problem with the Pfizer shot is logistics more than anything so far. You have to move kind of fast once it's removed from storage or it goes bad. mRNA isn't the stable outside of a cell. You feel a bit like crap for a day or two. I get my second one soon. They told whatever we felt the first time is going to be that x2. My phone hums when I place it next to my arm.