Obviously you've gotten more than enough positive feedback but thought I'd add my own - last trip I was disbounding as Cindy and so HAD to meet her and it was
amazing. The kids in front of me were being pretty normal - they'd walk up, hug her, smile, she'd say something while signing their autograph book while they got all shy, and then it was one more picture and on to the next kid. Then it was my turn and she got SO EXCITED and we had a whole conversation to the point where I started feeling a bit bad for holding up the line except, at least, those after me seemed to really enjoy watching us. And it was entirely Cindy's doing. From what I saw, the average kid just doesn't give the characters much to work with. They go quiet, do that shy dance, and quietly answer yes or no to direct questions. Having an adult to play off seemed to make her day and she was obviously loving it, possibly even more than I was and, trust me, I was in heaven.
So, see, you meeting the characters as an adult isn't selfish - you're there to make their day a bit better! Totally unselfish and the least we adults can do for the characters that spread so much magic.
And sorry you had that one run in with a crazy parent that last day. If it helps, if it wasn't you it would have been something else. There's something about having kids that tells an already entitled person that they're RIGHT and NOBLE for demanding special treatment for their kids. You know that the same lady would be the one who, in 10 or so year's time, would throw a hissy fit if her now-adult snowflake wasn't allowed to meet characters. Sorry you ran into that person and PLEASE don't let her ruin your vacation memories. She's SO not worth it.
I work retail and, trust me, when I say that she would have gotten her knickers in a knot one way or another ... I know. Oh how I know.