WooCommerce: Display Order Delivery Date @ Checkout

/**
 * @snippet       Display Order Delivery Date @ WooCommerce Checkout
 * @how-to        Get tutoraspire.com FREE
 * @author        Tutor Aspire
 * @compatible    WooCommerce 5
 * @donate $9     https://www.tutoraspire.com
 */
 
// -------------------------------
// 1. Display Checkout Calendar if Shipping Selected
 
add_action( 'woocommerce_review_order_before_payment', 'tutoraspire_echo_acf_date_picker' );
 
function tutoraspire_echo_acf_date_picker( $checkout ) {
   echo '
Delivery Date
';
   woocommerce_form_field( 'delivery_date', array(
        'type' => 'text',
        'class' => array( 'form-row-wide' ),
        'id' => 'datepicker',
        'required' => true,
        'label' => 'Select Delivery Date',
        'placeholder' => 'Click to open calendar',
   ));
   echo '
';
}
 
add_action( 'woocommerce_after_checkout_form', 'tutoraspire_show_hide_calendar' );
  
function tutoraspire_show_hide_calendar( $available_gateways ) {
   wc_enqueue_js( "
      function show_calendar( val ) {
         if ( val.match('^flat_rate') || val.match('^free_shipping') ) {
            jQuery('#show-if-shipping').fadeIn();
         } else {
            jQuery('#show-if-shipping').fadeOut();
         }   
      }
      jQuery(document).ajaxComplete(function() {
         var val = jQuery('input[name^='shipping_method']:checked').val();
         show_calendar( val );
      });
   " );
}
 
add_action( 'woocommerce_checkout_process', 'tutoraspire_validate_new_checkout_fields' );
  
function tutoraspire_validate_new_checkout_fields() {   
   if ( isset( $_POST[ 'delivery_date' ] ) && empty( $_POST[ 'delivery_date' ] ) ) wc_add_notice( __( 'Please select the Delivery Date' ), 'error' );
}
 
// -------------------------------
// 2. Load JQuery Datepicker
 
add_action( 'woocommerce_after_checkout_form', 'tutoraspire_enable_datepicker', 10 );
  
function tutoraspire_enable_datepicker() {  
   echo ''; 
   echo '';     
}
 
// -------------------------------
// 3. Load Calendar Dates
 
add_action( 'woocommerce_after_checkout_form', 'tutoraspire_load_calendar_dates', 20 );
  
function tutoraspire_load_calendar_dates( $available_gateways ) {
   wc_enqueue_js( "
      $('#datepicker').click(function() {
            $('#datepicker').datepicker({ 
               dateFormat: 'dd-mm-yy',
               maxDate: "+2m",
               minDate: 1, 
            }).datepicker( "show" );        
      });
   " );
}
 
// -------------------------------
// 4. Save & show date as order meta
 
add_action( 'woocommerce_checkout_update_order_meta', 'tutoraspire_save_date_weight_order' );
 
function tutoraspire_save_date_weight_order( $order_id ) {
    if ( $_POST['delivery_date'] ) update_post_meta( $order_id, '_delivery_date', esc_attr( $_POST['delivery_date'] ) );    
}
 
add_action( 'woocommerce_admin_order_data_after_billing_address', 'tutoraspire_delivery_weight_display_admin_order_meta' );
  
function tutoraspire_delivery_weight_display_admin_order_meta( $order ) {       
   echo '
Delivery Date: ' . get_post_meta( $order->get_id(), '_delivery_date', true ) . '
';
}