Very good and convenient. As soon as we got off the plane, there was a shuttle with Dollar printed on it. The driver didn't even ask and just helped us load our luggage. When we arrived at the rental location, the service staff almost charged us for additional insurance, but thanks to the printout from Zuzuche, we avoided that extra charge. However, they still charged me for a tank of gas (as I originally booked full-to-full). This turned out to be convenient since I could return the car with an empty tank, avoiding any hassle. Overall, the price difference wasn't significant. In summary, it was very cheap, very convenient, and very valuable.