<label class="readonly-bottom">Purchased By:</label>
<span id="OrderShipName"><?php echo $row_WADAorders['OrderShipName']; ?></span>
to:
<label class="readonly-bottom">Purchased By:</label>
<span id="OrderShipName"><?php echo $row_WADAorders['UserFirstName']; ?> <?php echo $row_WADAorders['UserLastName']; ?></span>