When I was in my late 20s (I'm a guy), I was trying to plan a solo trip to Disney and my mom and dad were so against it. I had to deal with alot of grief from them. My mom was very upset that I wouldn't be able to handle all the responsibility of being on my own for a vacation. It was very difficult - alot of arguing. I lived at home, which compounded the problem of my parents still viewing me as a kid.
Anyway, my trip never happened back then, it was too much drama and then we went one last time as a family and them my mother got very sick and passed away from cancer.
Anyway, some time after that devastating loss, I wanted to try to plan a solo trip again to Disney, I was now 30, and determined. My father was very against it and tried to talk me out of it, but he wasn't quite so upset about it as my mom was, so I basically held my ground and told him that I would be fine. I told him I had used the internet and researched the entire trip to a tee, and how everything would be taken care of and how safe Disney is too.
I mean, here I am, a 30 year old man (or nearly that when my mom was alive), and I had both parents worried to death something would happen in Disney. Even though we had been there twice, and they knew it was safe.
I ended up going on solo trips 3 years in a row in fact! I come from NY, so I know about having to be safe, and what looks suspicious, but honestly I have never felt safer in my life than at Disney in all the parks. Even when it was dark at night, and I was leaving a park, like Epcot, and I took some of the more isolated paths, I felt completely safe. Of course anything can happen, in theory anywhere, but really, what crime ever happens in Disney? Other than the occasional drunk who maybe drinks too much around the world or something and causes a disturbance.
I ended up feeling completely confident from these trips and impressing my dad and other relatives who thought I couldn't handle it. I have a very protective Italian-American family who believes everyone is safer at home!