Can I sit at character creation screen

[Balloon-aerie-peak]

From their AMA:

@Kaivax

[Q: Will servers be brought down at some point before release or will players be able to sit at character select waiting for “Enter World” to activate?

A: We are likely to perform some kind of realm restarts or maintenance between now and launch. However, in the minutes leading up to launch, our plan is that the realms will up and available and the Enter World button will instantly light up once we’re launched.