Our February 2014 trip was super stressful, it was my friends first trip and I ran myself ragged trying to make sure she had a good time. We are both single almost 40 ladies and she met almost every character we could find. She wanted to meet Snow White, she uses an ECV and it started to sprinkle, so I stood in line and she was off to the side under an overhang keeping dry.
When it was her turn she went up and got her picture and I guess when she was leaving she pointed to me and Snow White wanted me to come up. All I can say was she was REAL!!! I turned into a 5 yr old girl, I was so excited. The photo pass pictures are priceless. Snow White saved my vacation. I was cold, wet, and super stressed out but she just smiled at me and it all melted away. She was so real, heck my eyes are getting wet just thinking about it.
So yes it is okay to be an adult w/o kids and see characters. And don't rush take the time allotted to you for waiting like everyone else (the handlers and photographers will help guide you out if you take too long).
And Snow White, if you are reading this, Thank you! I have the pic of me acting like a 5yr old on the refridge to remind me how real Disney can be.