public function ajax_handle_rsvp() {
		$response = [
			'html' => '',
		];

		$ticket_id = absint( tribe_get_request_var( 'ticket_id', 0 ) );
		$step      = tribe_get_request_var( 'step', null );

		$render_response = $this->render_rsvp_step( $ticket_id, $step );

		if ( is_string( $render_response ) && '' !== $render_response ) {
			// Return the HTML if it's a string.
			$response['html'] = $render_response;

			wp_send_json_success( $response );
		} elseif ( is_array( $render_response ) && ! empty( $render_response['errors'] ) ) {
			$response['html'] = $this->render_rsvp_error( $render_response['errors'] );

			wp_send_json_error( $response );
		}

		$response['html'] = $this->render_rsvp_error( __( 'Something happened here.', 'event-tickets' ) );

		wp_send_json_error( $response );
	}