Parking in the mall parking lot

Q: Is it permissible for me to park in the free mall parking lot and visit a friend who lives close to the mall or am I stealing by using their parking?
A: It is a problem, since the parking lot is for a certain purpose and you are using it for another purpose. While this is not explicitly written in any place, it is clearly the intention.
Q: If I buy a drink in the mall, can I leave my car in the parking lot for two hours to visit a friend?
A: Everything must be done based on what we understand to be the intention. This means that if the parking lot is empty and you bought a drink, it does not matter to them if you stay. But if the parking lot is crowded then their intention is not that the cost of the drink buys you parking there for a long period of time.