Registration is where the sign-up forums will be opened for both those days. You can sign up at any time on the 1st and 2nd of June. People will also sign-up for their desired competitions by donating a tiny fee of $5.
so basically those are the last 2 days we can sign up, And there will be no playing on that day? or what?
Sign-ups will take place May 30th. That's just the day you basically post in the specific forum saying "Hey, I want to partake in this tournament, here's my gamertag, here's what brackets I want to enter, etc. " June 1st and 2nd will be the actual registration days which is where you pay your 5-30 dollar entry fee depending on how many brackets you enter of course. You will then be put on the Approved Players list once the money checks through and we know it's you. And then after registration is over, we whip up the starting brackets, and the tourney starts on June 5th! Specific game times can be found here.