Originally Posted by
earlyriser
Thanks very much. Shame about the lack of upgrade. Hopefully, I have better luck!
Diamond upgrades are a Hilton Honors policy, but are subject to 'availability'. But 'empty' and 'available for complimentary upgrade' are two different thiings. So, to that extent, upgrades are at the properties's discretion. Or at the discretion of the person checking you in.