Outside of taking the cart back inside, I have only ever seen one cart area at Lulu and I have not seen one outside of FCC at all. Where I am from, shopping centers have a cart return area in each row of parking to avoid this. Some even require a coin deposit to get the cart (which are all chained together and the coin will unlock one cart) and then you get your coin back once you return the cart, if you don't return it, then whomever does gets a free coin.
Outside of taking the cart back inside, I have only ever seen one cart area at Lulu and I have not seen one outside of FCC at all. Where I am from, shopping centers have a cart return area in each row of parking to avoid this. Some even require a coin deposit to get the cart (which are all chained together and the coin will unlock one cart) and then you get your coin back once you return the cart, if you don't return it, then whomever does gets a free coin.