When I am at a restaurant with my DGC I usually get the job of taking both children to the toilet afterwards. They both come in with me to the Ladies (boy age 7 and girl age 5). No-one has batted an eyelid so far, it's so obviously granny doing the post-meal WC run. The same would apply to a man doing the chore too. I can't see why anyone should feel uncomfortable with it, or why it should be an issue if the little girl does see men urinating. She is with her dad, she is not being molested, and if no-one makes a fuss about it she won't be troubled by it. I think there is a danger in today's society that anything that could be seen as even the slightest bit 'sexual' (for want of a better word) is immediately deemed to be sinister.