T&C here:
https://www.deltaticketmaster.com/terms-conditions
Of note:
- "The SkyMiles account holder must be the same as the Ticketmaster account holder in order to earn miles (Name in both accounts must match)."
- Valid for "events taking place in the United States and Canada" only.
- Valid for "Standard ticket inventory offered on ticketmaster.com"
Since it redirects to TM, I don't think you're under any disadvantage as far as getting in the queue to get your tickets at 10:00:01 am. But if I interpret the last bullet above correctly, the "standard inventory" rule may mean it can't be used with presale codes or for Amex/Citi exclusive seats.