Frontier Touring head Brent Eccles said Sheeran's tour was set to attract the largest crowds for a tour in New Zealand.
''It will be massive.
''I thought they would go well, but I'm a bit surprised about how well they've gone.''
Tickets to the Dunedin shows had ''all but sold out''.
Some restricted view tickets were still available late yesterday.
A limited number of sight-line tickets could be made available closer to the March 29 and 31 Dunedin shows, Mr Eccles said.
The sight-line tickets could come from space normally used by the production crew.
Some fans reported being unable to buy tickets 15 minutes after general sales opened at 2pm yesterday.
Pre-sale tickets sold out within 20 minutes last Tuesday.
Tickets were being re-sold by scalpers online within 30 minutes of the general sale starting.
Four tickets were advertised on scalping website Viagogo for $2782.28 less than two hours after general sales opened.
Trista Townsend, who spoke to the Otago Daily Times last week about missing out on pre-sale tickets, managed to secure some yesterday.
Nerves were frayed and friendships made in the queue for tickets at Forsyth Barr Stadium.
Debbie Waide, of Dunedin, was the first to join the queue at 8.10am. At 10am Erin Davis, also of Dunedin, set up her camp chair in the queue.
Ms Waide said after four hours waiting together a friendship had developed.
''We yakked and yakked and it went quick until 20 minutes to go. Then the last couple of minutes took a lifetime.''
Ms Waide was unable to purchase tickets online because she required special seating.
After buying her ticket she still did not know what night she was going but did not care.
She would collect the ticket, and find out in February what day she would go.
''I'm going though. I just love his music so who cares about what night.''
A Forsyth Barr spokeswoman said the stadium was unable to comment about whether security would be changed as a result of the terror attack in Manchester.
