I didn't have a singe blister or issue. My son did end up with a couple blisters but nothing crazy.
I wore toe socks from XO Skin and in hindsight maybe should have gotten him a pair. He also seemed to wear his shoes pretty loose. I didn't want to micromanage his shoe wearing so I only mentioned it to him once.
But honestly, a couple blisters for ~240 miles is not bad at all.
I do have some feet and toe numbness still. Apparently hunters call this "Christmas foot?" It has happened to me on every thru hike over 100 miles. So I am used to it now.