Expansion registration via Pre-order?

[Cat_Girl]

You will get all of the expansions prior to Dawntrail, but you will have to wait until the 2nd of July for Shadowbringers and Endwalker to unlock along with Dawntrail of course.
You won't be able to enter Dawntrail areas or start it until Endwalker is complete too.

What you can do is everything up to the end of Stormblood with that free Starter Edition perk for the time being.

I should mention that you have to wait for the official release, the 2nd of July for the prior expansions*, as they do not unlock on the 28th of June with early access.