So this thread is going well

Personally, I feel that if the OP isn't comfortable bringing her 9 year old son into the women's restroom, but doesn't want to send him alone to the men's, there needs to be somewhere for she and her son to go.
This link may have already have been posted, but if not, it may be helpful.
Family Restrooms at WDW
And just a friendly reminder to note, we say this over on the DISAbilities board all the time- don't assume that someone that looks "normal", but comes out of a companion restroom, is someone that is being disrespectful to our friends in the wheelchair/
ECV community. Some of us have invisible disabilities, and though we look "normal" at first glance (and I hate using the word normal, because what is that really?), we may be fighting a battle too.