That's true - there are many incidents, and I hope my comment didn't come across as downplaying the danger of it (to be fair I personally don't intend to keep palys or zoas at any point due to the toxins).There are far more reported incidents than most would have you believe, leaving how many unreported or misdiagnosed? I sound like a broken record, but the bulk of this hobby grossly and dangerously underestimates the danger. It is quite literally one of the deadliest neurotoxins on the planet and you have no way of knowing if your particular corals have it or don't.
If I were the OP - I wouldn't have anything from the paly or zoa family in my tank. Simple as that.
My point was just that with proper precautions it shouldn't be an issue (I can only think of one instance where the poisoning would have been really unexpected; the rest all came from doing less-than-wise things with the corals without PPE). With small kids involved, though, it may be best to avoid them as OP was already planning regardless of any precautions.