Wellington Sevens crowds have so far received good marks for their behaviour from emergency staff.
Wellington Free Ambulance stadium treatment centres have 120 bags of saline fluids at the ready to aid intoxicated patients.
A few fans had needed treatment this afternoon and others needed help with cuts and bruises, Wellington Free Ambulance spokesman Daniel Paul said.
An ambulance triage unit will be set up in Courtenay Place from tomorrow night, and the "Tory St Hospital", comprising 12 beds in shipping containers in a car park, would treat those who over-indulged.
Wellington City Council-contracted surf lifesavers are also at the ready in case fans decide to take a dip in the harbour.
Inspector John Spence, operation commander for the tournament, said boosted stadium security was keeping crowds reined in.
Once the crowds began their march to the Courtenay Place party precinct, revellers caught drinking in liquor-ban areas could cop recently introduced "boozing ticket" infringement notices, fining them $250.
He said Wellington's new 4am bar closing times would prove a "sea change" compared with previous tournaments for the 177 police on-shift this weekend.
"This weekend is going to be the real test," Spence said.
"It's a huge weekend for Wellington and we're just wanting everyone to have a good time, look out for their mates and pace themselves with the alcohol."
- Fairfax Media