It's the big white grandstand at Ellerslie Racecourse behind the Globe Theatre. Exhibits are on the Ground Floor, Classrooms on the 1st Floor (Entry to this area is only for those that have booked into classes), and Cafe on the 2nd Floor.
See Ellerslie Event Centre Venue information here. Show opening hours
Friday and Saturday: 9.00am to 3-day VIP ticket holders 9.30am to 1-day VIP ticket holders 10am - open to General Public 5.00pm - show closes 7.00-10.30pm - Crop Night Friday
Sunday - as previous days but show closes at 3pm
All parking is free for Event Centre Visitors.
Arriving from the Airport - From the Airport come down Pah Rd and turn into Greenland Rd and turn right at the Racecourse.
Arriving By Train - If coming by train, take the Southern Line and get off at Greenlane station. There is a 700m walk from the station to the venue.
Arriving By Bus - See https://at.govt.nz/bus-train-ferry/ for the bus and train timetable.
Uber is also another efficient and easy way to get around Auckland. You download the app and create an account linked to your credit card then you just request a ride when you need one.