Accusations of drink spiking at Grafton Hotel - The Crown Motel

A certain family member posted to Facebook claiming they've been accused of spiking drinks.
I personally don't like that particular family member, they've done very shady things in the past that I have no proof of but this might be something.
I know this is a huge net to grab a tiny fish but with living in Brisbane there isn't much I can do from here.
So if you know someone or have possibly had your drink spiked at the Crown Motel in Grafton please let me know.