That is why the 5 Steps are worded as they are
some children are able to be easily taught that please doesn't make it optional and I know that's important to some parents, when they are the parents and children together that is fine
When the children aren't reading the same playbook then it gets tricky
IME when I get resistance I just stop and apologize for miscommunicating--then I explain that they need to do whatever and they do.