I just got one of those tickets and don't really know what to do with it
I'm still fairly new to the site and still a bit overwhelmed by everything especially the event

where is justina aurorelis, who I'm supposed to give this ticket? and what does it mean with this I can enter the maze, I thought I'm already in the maze?

edit: never mind, I found her on my own, after being able to add a third Sylvesti to my party it was a lot easier to move in the maze

How about you give it to me :p

Nah, I'm just kidding. In the festival zone, go to the far left of the fenced-in area (where you first start) and there should be a girl. Talk to her and use your ticket. Inside of the maze, you can find all sorts of stuff like avatar items, gold, etc etc which is why they're highly sought after.

thank you for the answer!

I already found her yesterday, but thank you non the less
my biggest problem was, that my party of two was not strong enough and so it was difficult to move around the maze.
yesterday I was finally able to add a third Sylesti and so it was much easier to find the right way

That's good, hope you were happy with what you got!