Wondering if anyone else thinks this way?

So I want to have a kid free baby shower. However, my mother in law and hubbys cousin had the nerve to tell me that I absolutely can not ask people not to bring their kids! Someone please tell me that I am not wrong for being absolutely pissed! All I want is one child free event for me and my unborn baby before she is born! I don't need or want kids running around and screaming all over the place.