I've never had problems with PF until our trip last April, when I apparently over did it during the second day. I mention that, because my suggestion may not be as helpful for someone with chronic PF...I'm not sure. But anyway, my left foot hurt for about two weeks before I finally found a fix. I had tried massaging it, ice, the recommended PF exercises. Nothing helped. Then I ordered these:
https://www.amazon.com/Plantar-Fasc...rds=Plantar+Fasciitis+Socks+with+Arch+Support. I cannot recommend them enough. Within a couple of hours, I began to feel relief and after a couple of days wearing the sock in the evening the pain was completely gone. They are very tight, but not uncomfortable and I didn't have any problem with circulation in my toes or anything. I especially like them because I can just wear them with my regular shoes instead of having to find special (potentially expensive) footwear.
We haven't gone on another Disney trip yet, but I will absolutely be taking these with me and wearing them if I have even the slightest pain.