Meg,
My only fear is having a seat next to a young child. I recently had such a flight while traveling drab. The child wanted to interact with me through most of the flight which I did. I enjoyed it but if I was en femme I suspect that I don't want to get into why I was dressed as a girl should she have figured it out that I was a guy. From my early experiences of being out, really young children were really good at picking up on mannerisms, etc.
Otherwise, I think I have spoken to more people sitting next to me than I have not. Interestingly though, the teen age and twenty something girls/women around me haven't been a problem.
Here's to enjoying your next flight :drink:
Leann