I got 2 presale tickets for this:
Section STAND
Row GA5
Seats **-**
From Ticketmaster site:
"I booked standing tickets-why have my tickets got a row and seat number?
Don't worry - we have to give all General Admission tickets a number so we can keep our systems up to date. It's just an admin thing, so they don't refer to any specific standing or seating location"
So I'm guessing the GA above stands for General Admission and not Gallery