ONYX Hospitality : Get Up To 25% Off Bookings With The Mosaic Collection, Thailand. Use our Mosaic Collection Newsletter Promo Code "TMCJU6AF" with your next booking and get special promotions at our hotels in Thailand from now to 31 August 2016. Terms & Conditions: Booking period from now until 31st July 2016. Staying period from now until 31st August 2016. Blackout dates are applicable. Other conditions may apply depending upon included properties.