Don't tell your wives, tell the owners/operators of the establishment.
Don't give in to that kind of societal inequality - change it.
Don't give in to that kind of societal inequality - change it.
Honestly, changing nappies isn't that bad, particularly for your own child, and even if it was, this is a pretty selfish attitude to take.
Also, if your country of residence is not so strict regarding this, go change diapers in the womens room if needed.