Who picks up the rubbish after an unofficial public gathering?

It was no surprise that league fans celebrated in Ōtāhuhu after the Kiwis vs Mate Ma’a Tonga test last month, says The Spinoff. But some were surprised by the amount of rubbish that was left behind. While security and monitoring were all increased to accommodate the expected activity, local facilities weren’t. Rubbish overflowed as the crowd struggled for places to dispose of their litter. But whose responsibility is it to ensure rubbish volumes are accounted for on nights like these?