In order to change the template based on specific user roles have a look at below filter code example.

/**
 * Change template name based on user role.
 * Make sure to create custom templates with the correct names or the templates won't be found.
 *
 * @param string $template_name template name.
 * @param string $template_type template type like global or simple.
 * @param int    $order_id      WC Order ID.
 *
 * @return string
 */
function change_template_based_on_user_role( $template_name, $template_type, $order_id ) {
	$template_name = 'nonsoci';
	$user          = wp_get_current_user();

	if ( in_array( 'socio', (array) $user->roles, true ) ) {
		$template_name = 'soci';
	} elseif ( in_array( 'ospite', (array) $user->roles, true ) ) {
		$template_name = 'ospiti';
	}

	return $template_name;
}
add_filter( 'wpi_template_name', 'change_template_based_on_user_role', 10, 3 );