我发过，回复挺快，但都是官话：
Greetings from Conrad Hong Kong!
Thank you for your email. Regarding the room upgrade, it has been noted, as you are the diamond member you will be first priority to ensure that the room upgrade
but the room upgrade only can be confirmed upon your arrival.Should you have any further enquiry, please do not hesitate to contact us.
We look forward to welcoming you to Conrad Hong Kong!
Best regards,
