At what age do you send your son into a public toilet on his own? Been meaning to ask this for ages as when we went to Chester Zoo in the summer there were signs up in the Ladies' toilets which said "We suggest that boys over the age of x [and I can't actually remember but it was younger than ds1, I know, and he's 8!] use the men's toilet facilities." It vaguely pissed me off (I disregarded it anyway) - I think it's up to me when I no longer take my sons into the ladies with me, not some faceless official at Chester Zoo It's hardy like it was full of delicate laydeez in various states of undress fainting at the sight of a gentleman in the inner sanctum.
But I think it's quite interesting - I do still take ds1 in with me, but he is at the age now where he's a bit groany about going in the "girls" toilet, so I suspect he will be off on his own soon.
So - when do they go solo? I think, for ds1, pretty soon (though not in park toilets - he goes in a park toilet alone over my dead body )