in December we want to go from El Calafate to Torres del Paine. We will stay three nights in hosteria Tyndall and one night in hosteria Las Torres. We want to rent a car in El Calafate. We need the car to drive from El Calafate to the park and in the park and in the park to come to the starting point of the hikes. Which Type type of car we must rent - 4x4 or normal ?