When told that their request cannot be accommodated, people seem to fall into two distinct categories. In category one are the people who accept it (some with good grace and some with copious amounts of disgruntled grumbling or outright complaining, but they still accept it) and in category two are the people who think the rules shouldn't apply to them.
The people in category two can drive you bonkers if you let them. It doesn't matter to them if it's a business guideline or a government law or anything in between. They want what they want and won't accept "no".
We had two people at the library today that fell in category two. In both instances, they thought they'd get a different answer if they approached a different staff member. Thankfully all staff involved held firm and gave them the same answers for the same reasons.