I think you need to provide us with a little more context for your question, weezer. What is it, exactly, that you're concerned about? What are you afraid might happen? What is it you're unsure about?
I mean, for some people the answer would be "pack their bags and drop them off for a fun weekend." For other people it might be "make sure that their father isn't going to be there for any reason" (e.g., where there is an order prohibiting contact with the children).