As much as I want to see everyone who is eligible for the vaccine to be vaccinated, I see this announcement will create major rifts within our society. The anti vaxxers are going to become alienated and resentful. They are going to be on the outer right through out society, work and play. While we who are vaccinated will see this situation as self inflicted that is most definitely not how they see it. There are a whole range of reasons they justify their action from the selfish "Its my choice no tells me what to do" through to a genuine (but misplaced) fear of what the vaccine might do to them now or later in life.
With the decree that 90% need to be vaccinated before more freedoms of movement or activities resume, the government has effectively mandated vaccination. The anti vaxxers are going to come under extreme pressure from the rest of the community in order for everyone to regain their freedoms. The harder you push someone in situations like this the harder they will push back.
Get ready for for the backlash
Unvaccinated will fill up our hospitals(as they are anyway) with covid and will make it a problem for people who are vaccinated who may need hospital services for other reasons.
In addition I can see this being an uphill battle to reject someone who's not vaccinated/anti vaccine and it get's confrontational.
Take it from someone who used to work in hospo/entertainment. People do not like being told no you can't go and most people will indeed not just raise a fuss but also being confrontational. I feel pretty bad for my ex coworkers who may get into positions like this in the cinema industry.