Hi there,

May I know whether there is a built-in hook or filter that I can use when an event is added to the cart and then redirected to the checkout page? I want to clear the cart and ensure it is empty before adding the event product.

Flow: Event Booking List → Book Event → Clear Cart (if it is not empty) → Redirect to Checkout Page 

I have tried using WooCommerce's woocommerce_add_to_cart_validation filter hook but to no avail. (It is working for regular WooCommerce products.)

function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
    if ( WC()->cart->is_empty() ) {
        wc_add_notice( __( 'Please enter a value into the text flowers label', 'woocommerce' ), 'error' );
        $passed = false; // Mark the validation as failed
    }
    return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );

Thank you so much for your help and the code snippets!