Teachers don't give out fines or decide who gets them.
Local authorities do.
5 school days is fine. It won't damage a child's education. The problem is when children then have a lot of sickness or other absence.
As a teacher, I don't really care about parents taking children out of school. But ..... don't expect me to spend my lunchtime catching them up and don't pretend it's an 'educational experience'.
I'd love it if teachers were also allowed to take 5 days holiday in term time too. I've never had a really nice holiday and my children never benefitted from the wonderful term time holidays some of their friends did. That'll never happen though.