First don't use the word immune even with second dose it doesn't make you immune just far less likely to get it. That slows the spread immeasurably but it doesn't mean you won't get it if you do keep getting exposed.This means every fan would have to receive their first jab by mid April on the assumption they'll only travel over the week of the first test. Considering it's a safe estimate to say about 75% of Lions touring fans are between 35 and 60 and work in the tertiary sector it's just not going to happen, they're not prioritised.
On vaccinations it's not going to happen especially in that group
We are currently averaging 400k on first vaccinations. That means with remaining population to be vaccinated on first dose in 28th June 2021. Except it won't be that because from 4th April we absolutely have to start giving 2nd vaccine doses which have basically stopped on 10th Jan. So they'll need to a massive slow down on 1st jabs late Feb/March so it isn't a master cluster **** and we stop giving 1st jabs entirely.
Were doing a superb job absolutely no doubt but the idea we'd be finished in July is simply not backed up by the numbers. Especially as noted the groups of people most likely to be going to a Lion's tour.