Always have the car in your driveway when possible. Legally the street belongs to the city and is fair game for getting a DOT tag or a ticket if someone complains. Your driveway is private property and is untouchable.
TINSTAFL is universally known although doesn't do much to refute or augment my point. Merchants / busniess often take one for the team and truly offer something for free as in the consumer doesn't pay at all. Some offer it "for free" (rather "complimentary" ) with the purchase of something which is what grinds my gears.