That equated to a crowd of 25,000 which would be the biggest since Rod Stewart performed there in 2012.
As it was with his 2005 concert, that too drew 25,000 people.
Crowds since then had waned with the 2013 Barry Gibb and Carole King concert drawing just over 17,000 people while the UK and Irish Concert the following year drew just 11,000 people.
Mr Holley said peoples' approach to specific concerts was always different and what the organisers had seen so far were two trends.
"One is that a large percentage will be from out-of-town - at this stage it is around 60 percent and about 40 percent locals."
That was the highest they had experienced in the concert's 25-year history.
Accommodation for that weekend in the Bay had pretty well sold out and the organisers appealed to anyone with a spare room to register their property on the concert's free accommodation listing service.
The second was that generally after tickets went on sale there was an initial rush and then a "hiatus" - a quiet time before a late pick-up.
"But the rate of sales has remained constant, so if people are taking the view that they could hold out until the last minute I would advise them to change their minds."
He said the resurgence of the Mission Concert after a slowing down over the past few years was "fantastic" and reinforced the stance the organisers took in 2015 when they called the event off after having not found an act they were comfortable with.
"It is about getting the right performers."
General admission tickets for the concert are $125 while gold reserved seats were going for $240.
A platinum reserve ticket, which takes in on-site parking and access to a special picnic area, is $368.
For the "ultimate" ticket, seating and catering package which caters for a group of 10 people the price is $6180.