I'm wanting to make a reservation at the Hilton Garden Inn in Ithaca NY for a graduation weekend May 2017. All reservations are being managed by the hotel directly, not central reservations, and they told me it is a "lottery" system and that my Diamond status doesn't give me any preference.

Doesn't seem right and don't know if I should just wait and see if I get a room in the lottery (in which case it's a non issue) or if I should escalate this with the Diamond service line or....

Thoughts?

Thanks