For us, we are often very particular about having them follow the rules set -but the reason is not because it is the only way - it is because they have to learn to follow different rules from different jurisdictions =so we make them practice and the bigger part is that they figure out how to read and follow specific things because different jurisdictions and even different judges have different rules for appearing in front of them, filing papers etc.
Whining that judge X would accept something to Judge Y that does not -usually does not get an attorney very far.