With the eairly access code how many days can we play after the launch date ?

[Zfz]

If you are worried about getting your early access items, you should get a long time to redeem them even if you miss early access. At 2.0 release, we had a whole year after the release date to enter the early access code to redeem the pre-order bonus items.

If you are worried about billing, then at 2.0, people were given 3 days grace after the end of early access. In effect people who pre-ordered got extra 3 days free on their billing. However unless your current billing will end before the launch of 3.0, you shouldn't need the grace period anyway as the Heavensward package does not come with free subscription, meaning unless you don't plan to be playing after early access (in which case why did you even pre-order), you need to extend your subscription before that time anyway.