You guys are talking about things that really matter to you, but really don't matter to school administrators. Give a decent school administrator a way out, and they will take it. They want parents and students to be happy. They will "bend" the rules to make that happen, even if the letter is "absurd".
In the end, as a parent, that is all that matters - that you get to take your child with you on vacation without destroying their relationships with their teachers or getting in trouble with the administration.