
Hard and fast
Not Absolute
Sometimes used to indicate that there may be exceptions, despite seeming strict.
Even with hard and fast rules, there can be special cases.
Cultural Nuance
In different cultures, what's considered 'hard and fast' can vary widely.
What's a hard and fast tradition here may not be so in another country.
Emotional Weight
Can indicate frustration when someone feels constricted by rules.
She disliked the hard and fast dress code.