A group of female students, who did not want to be named, believed it was inevitable they would all get it eventually, but they hoped being vaccinated would stop them getting badly sick.
They said they would try to limit their contacts by avoiding big parties in favour of small-scale gatherings with people they knew were vaccinated.
They believed alcohol-fuelled poor behaviour was not representative of most students.
Senior Sergeant Anthony Bond said the gathering broken up in Leith St had more than 150 guests when it was closed about 9.45pm.
The organisers said they had someone on the door checking vaccine passes, but measures fell by the wayside as those who were meant to be enforcing compliance joined the party.
On Monday night, several smaller parties, of between 20-40 people, had popped up as a way to get around the 100-person limit on large gatherings under the Red setting.
Like the larger gatherings these still posed a "huge risk" of becoming superspreader events, due to the tendencies of people to move from one party to another, Snr Sgt Bond said.
Most of the students dealt with by police so far seemed more concerned with the risk of infringement fines than Covid-19, and they were being educated and encouraged to comply with the rules.
He accepted that "at some point that messaging will be ignored" and enforcement would begin.
In previous years, trouble had often been caused by non-students, who were not subject to the university code of conduct, attending parties in the student area, and he expected this year would be no different.
Last week "campus cop" Senior Constable John Woodhouse sent a letter to students outlining the requirements that must be met for parties to take place in Red.
It advised students that gatherings were limited to 100 people and must take place within a defined space, separated from passersby by a wall with a distance of at least 2m.
The number of attendees must to be monitored and contact tracing measures upheld.
Vaccine passes must also be checked.
Students could be held responsible for facilitating a gathering even if they did not directly organise gatherings in breach of the rules.
For most offences, a $1000 fine would be issued to an individual, but it could be as much as $4000.
More severe penalties could be given if incidents went to court, the letter warned.