This is a simple yet excellent affair. A boat, banging tunes, a party atmosphere and London's evanescent image acting as an idyllic background. But that ain't even it. Once you get back on dry land and if you're hungry for more, it's time to head down to Opal for the afterparty. Get your party shoes on, book and see you on board. Over 18s only. Must be at Westminster Pier by 6:45pm for 7pm departure. Returning at 11pm for the afterparty at Opal until 3am.