if ( class_exists( 'TribeWooTickets' ) ) {
    remove_action('tribe_events_single_event_after_the_meta', array(TribeWooTickets::get_instance(), 'front_end_tickets_form'));
    add_action('tribe_events_single_event_before_the_content', array(TribeWooTickets::get_instance(), 'front_end_tickets_form'));
}