Advance Purchase - Save Up To 20% Off! Book seven days or more in advance at Millennium & Copthorne Hotels and save up to 20%. With Advance Purchase you get a discount for your advance booking. You also ensure that you will stay at a top city centre location, receive outstanding customer service and enjoy superb cuisine at exceptional restaurants. If you are searching for the best advance booking hotel offers, look no further: you have found it. Book now and save.