Q:
Play as Rev if I prepurchase today?
You should be able to play in the beta as soon as your account shows the ‘beta’ character slot (from pre-purchase).
Good luck.
Here’s the pre-purchase FAQ:
https://help.guildwars2.com/entries/94582027-Heart-of-Thorns-Pre-Purchase-FAQ
And a snippet about the free slot :
All accounts that become eligible by July 9 will have their free character slot applied by July 10. Eligible accounts that are upgraded with a pre-purchase serial code after July 10 will receive their slots on a weekly basis after that.
Sadly, I’m in the same boat as you. Makes me wish I would have pre-ordered a couple days sooner.
That won’t affect the Beta slot that one receives for pre-purchasing, and thus playing in the beta. That ‘snippet’ is referring to the extra ‘veteran’ character slot.
(edited by Inculpatus cedo.9234)