Honestly, many under 2 crowd really don't have fear of things. My now 4 year old would happily go on anything until she turned 3, then she started being scared of things like Haunted Mansion. She will still go on, but she shows she is scared and talks about being scared. She wants to hold on to me and stuff. She didn't get nightmares and was scared of the dark until after she was 2. She slept in pitch black dark room until we had to get her a night lite at the age of 2 1/4. A little after she turned 2 1/2 is when she started waking up with bad dreams and needing snuggled. It was between 2 1/2 and 3 when she started to have a healthy fear of scary rides and things.