Trying to get a room at Muckleshoot Casino Resort for NYE 2025 (Seattle)

Hi - I'm trying to rent a room at Muckleshoot Casino Resort for New Years Eve 2025. Their website shows nothing is available. I'm hoping that someone seeing this has some idea of how I might be able to hook up with a room there for the night of Dec. 31st. I'm happy to pay a premium / finders fee / whatever. Thanks so much!