I have taken teams to 2 national schools tournaments and flights are not the costly part of the trip, you book well ahead of the dates or fly charter with Chatham Air if they have a plane/pilots available.
The cheaper way is fly Chch to Wellington and hire two mini vans travel up Friday come back Monday. You need to hire transport in Napier anyway and more options for cheaper rates out of Wellington region.
I have taken teams to 2 national schools tournaments and flights are not the costly part of the trip, you book well ahead of the dates or fly charter with Chatham Air if they have a plane/pilots available.
The cheaper way is fly Chch to Wellington and hire two mini vans travel up Friday come back Monday. You need to hire transport in Napier anyway and more options for cheaper rates out of Wellington region.