Just went through the muppetry of NC accounts, authenticator and whatnot and purchased a digital deluxe pre-order. I'll assume my 30 days are added to the account even tho I didn't set up a subscription (yet)? FAQ says they are added on June 3rd but I'll assume it applies for the 3 day head start regardless.
edit: okay the account management page finally decided to add the account summary confirming all is in order