When one orders another is it expected that politeness and respect go hand in hand?

When someone, a boss, official, worker of the store, etc. ask you or orders you to do, or stop doing something, for instance, not sit on display furniture, not park as close to a fire exit, don’t leave stuff in the break room, etc., is it expected that if they ask you respectfully they should be polite too? If you were asked respectfully but not politely, would you feel it was still disrespectful?