We went out on their Toyota day. Heaps of people there but it's such a big place you hardly noticed. There's the main tracks then there is a track that takes you to the tallest tree in NZ. Beware it's almost 6 km round trip, we only saw two other groups in the whole time. There is a gate that exits that walk if your organised enough you could leave a car there and save yourself the walk out.
We clocked up 12 kms walking around easily. There was some great nature packed attractions but I really feel that wildlife was a bit lacking. The high light was the skinks for me, they have some beauty specimens there.
A good day out for the family.