Please attach the actual page instead of copy and pasting the contents into the forum. It is much easier to read when I can open it in Dreamweaver and then I can reference line numbers.
In your case, just remove this line of code:
$WAFV_Errors .= WAValidateRQ((isset($_POST["Address_1"])?$_POST["Address_1"]:"") . "",true,7);
it is what is making the address field required. Pages will have both client and sever validation. The client validation is controlled in the form element itself and the server validation is on the top of the page.