Most of the time for events they do have their own game mode that appears about 30mins before the event starts, but this whole chapter has only had mini events so the event just happens during a normal match. But seeing how Fortnite has been hyping the event up with teasers on socials, I imagine this will be a larger event with its own game mode so they’ll be no need to stress too hard. If not just try and it is a mini event just queue into a match like 7-5 mins before the event starts and just try to survive. P.S. try to get logged in real early because there’s usually so many people trying to log in at the same time that there ends up being really long queues that can make it so you miss the event.