Just to be sure I got things right:
- When I redeem Early Access code on my account I'm granted the right to log in the 24th August.
- In order to keep playing once the official service begin on the 27th I need to register the product code which is inside the box. (<- really not sure about this).
- I also need to pay straight for at least 30 days game in order to play after the official service launch. (<-also really not sure about this).

Correct me if I'm wrong because I'm just guessing from all the infos I've managed to gather.