Ok so we have never rented a car before but this time we are considering it as an option. Mostly because A..we aren't going to have the dining plan and want to stop at Walmart or something altho we usually do grocery delivery the items definitely are more expensive so it would be a savings stopping ourselves and B..we are also considering a trip to Lego Land. Now my questions are can we do magical express and have the car/dropped off and picked up at our resort? And then maybe we can only rent for a few days instead of the entire length of trip (staying at the Poly) can we rent high back boosters for my kids so we don't have to drag them with us on the plane and the bus? What rental companies are the cheapest?