Hi,
1 - Yes
2 - The cosmetics are claimable so far for a full month, so if someone buys the game during this time and wants to claim them they can.
3 - The map will be available to all players permanently once it’s unlocked!
4 - It’s available to all as it’s our first event and we wanted as many people to be able to enjoy the content as possible but also to give players a way to work towards a common goal.
As it’s our pilot event we may adapt it going forward to require participation.