> I think that the real lesson here is that if a rule is too subjective to interpretation, is better to discuss it beforehand, because even if you're right the person responsible for enforcing it could still get it wrong.

This is definitely a good idea. Sadly, it's all to common to discuss things beforehand and STILL have an enforcer get it wrong.

You could talk to the person responsible for writing the rules, but since the enforcers are different people with different interpretations, you can still get denied. Even between two different enforcers you could get different results.

It's unfair, it's sad, but that's the world we live in.