Aion on Steam

I was thinking about pre-purchasing Aion (collector) on Steam.
But there’s something I don’t get.

Also, pre-purchasing on Steam gets you an invite to the pre-release closed-beta events!

Closed Beta Event #5
Starting time: July 31 (12:00 PM PST, 9:00 PM CEST, 8:00 PM BST)
Ending time: August 3 (12:00 PM PST, 9:00 PM CEST, 8:00 PM BST)

What are those closed beta events?
I mean, will I still be able to play beta after august 3 until the release?

I know it sounds stupid, but I just wanna make sure before I buy it…

Also, are there some people here who play the beta ATM?
How is it?

Thanks already.

Hmm… I’ll wait for the release.

Hmm… I’ll wait for the release.

FWUUUU! I am relieved!