This may sound like an odd question. But I have very unstable ankles and walking on certain kinds of surfaces that are not level tend to make my ankles give out. I had booked POFQ but have never been. I see in some youtube videos some concrete floors, what appear to be pavers (but could be stamped concrete), or cobblestone, some brick, etc. Various surfaces, which makes me a bit concerned that the ground may feel not level under my feet. For example, the ground in Animal Kingdom (on the way to Pandora/Navi River) kills my ankles. So is it TRUE cobblestone (which tends to be very uneven)? Anyone can shed some light on this?