I live in Ireland, vaccines aren’t mandatory here in any way. No employers are able to mandate that workers have to get it, and the government only advises people get it. There’s actually been a fairly low uptake in the number of under 30s signing up for the vaccine.

This. There are young people getting it but in the overwhelming majority of cases they’re asymptomatic or only have mild symptoms. I’ve gotten it, I’m in my late 20s, and I was over it in a few days.