I would greatly appreciate advice on what to do with my rental car situation with National. I have reserved a van for 6 people, pick up at Central Station in Milan and drop off at MXP 4 days later. However our flights changed and now we will depart from LIN airport. I'm not able to change the drop-off location for the van, and vans are no longer available when we travel, in 3 weeks. Does anyone know what would happen (fee charged?) if we drop off at the Milan airport not in our reservation?