We googled Festive attire for you and it said:
"To break it down, festive attire allows you to have fun and play around with your looks. Women are encouraged to wear cocktail party attire featuring bolder colours, playful accessories, and unique silhouettes. Men should sport a patterned or textured suit, jazzed up with a bright tie or creative pocket square."
Basically, please don't wear neutrals, black or white. Think sequins, glitter, bold patterns & colours! If you've got something in the back of the wardrobe you never get to wear, pull it out and put it on or hit up an op-shop and find something fun to wear!
We will be indoors apart from walking to the second venue (about 1 min if you're quick) but it is still winter in Melbourne so rug up as needed.
Here are some photos of the venue to help set the scene