woocommerce_form_field( ‘billing_full_name’, array(
‘type’ => ‘text’,
‘label’ => __(‘Your Name’, ‘woocommerce’),
‘required’ => true,
‘class’ => array(‘full-name-class form-row-wide full-wide’),
‘clear’ => true,
‘placeholder’ => _x(‘Your Name’,’placeholder’, ‘woocommerce’),
), $checkout->get_value( ‘billing_full_name’ ));
I was missing the Placeholder: ‘placeholder’ => _x(‘Your Name’,’placeholder’, ‘woocommerce’),