Every Friday in the month of July, the European Night Market it being held in Madame Brussels Lane (50 Lonsdale St Melbourne). The last one is on Friday 28th of July. The event is free, but you'd need to buy the food/drink from the stalls.

https://whatson.melbourne.vic.gov.au/things-to-do/european-night-market

I definitely reccomend going, there are plenty of seats, stalls, food, and drink to consume. There are some people dressed up in winter-themed costumes and a couple of entertainers as well.

Here are some photos I took of last night, not many, but a few :)

(I blurred out the faces of people in this one, because they weren't stall owners)