Does anyone know of any Halloween club/bar events going on in Hamilton on Saturday, the 29th?
I've checked some websites but had little luck on finding out whats happening.

Any info or suggestions on where to go would be appreciated!

Yup! 1280 is having a massive halloween night on the Saturday. There will be prizes for best/worst costumes, and a trip from Breakaway tours will be given away. Be sure to arrive early, as the bar hits capacity within an hour on nights like this.