For me, having a clearly stated PTO policy saves me so much anxiety that I don't mind the minor(?) reduction in flexibility. I'm mildly affected with Asperger'

For me, having a clearly stated PTO policy saves me so much anxiety that I don't mind the minor(?) reduction in flexibility. I'm mildly affected with Asperger's. There are many aspects of workplace culture that are obvious to other people, but which I take a long time to clue in regarding. This has included figuring out the reasonable boundaries for unlimited PTO in the past, especially when it required having to "read" my manager to figure out the acceptable timing and quantity of PTO. My current employer strikes the perfect tone for me: they offer unlimited sick/family leave, but ask that we shoot for approximately N days of actual PTO per year. (Where N is clearly stated.)