The only time I've felt uneasy at WDW was this past October during our first stay at the Poly. The resort is gorgeous, but at night it is very dark! DH & I had left the children in the Neverland Club while we went for a very special dinner at the GF. I had purchased a cake for us to have there & there was a lot left over. When we got back to the Poly, I told DH to take the cake to our room & I'd go get the kids. We were in Samoa & it had been such a simple walk over to the Neverland Club when we dropped the kids off. Well, it looked a lot different in the dark. I got there fine & got the kids. I was listening to them tell me all about the fun they'd had & I somehow got turned around. Those tiki torches make for a romantic ambiance when I was strolling with DH, but it was dark & a bit creepy when I was alone with my kids, trying to figure out where we were. And we didn't see another person! We eventually came out at the beach (by Tokelau, I believe?) There were a lot of people on the beach, as the fireworks at MK were about to begin. Once I got there, I could find my way back.
This was very unnerving to me, as I usually have an excellent sense of direction. I won't say that I felt "in danger", but I definitely was much more alert of my surroundings when I was lost.