If they hit 20 teams, and go with a straight play-each-team-once format, that’s only 10 games - one in Dunners, maybe one in a smaller boutique SI location that they move about, potentially one in the NI (imagine alternating between Waikato and Wellington) - only leaves 7-8 Christchurch games.Here are the Other Cities with Census 2023 population counts
Dunedin 135 000 - big enough to host a game
Queenstown - 47,808 - not big enough to host a game
Nelson - 52,584 - not big enough to host a game
Invercargill - 57,900 - not big enough to host a game
How many games is each CHCH bid promising to Dunedin and the other South Island Cities.