Planning a trip to France for June with husband and two teenagers. We want to stay in Paris for 5 or 6 nights then tour the Loire Valley, Dday beaches and Mt. Saint Michel. We want to rent a car for driving in Normandy and Loire Valley, but do not want to drive in Paris. We would like to make a stop in Giverny. Would it be a good idea to take a train from Paris to Vernon, rent a car there, then tour Giverny and go on from there? Would Vernon be a good place to rent a car or should we skip Giverny and go on farther into Normandy before renting a car? Any advice would be greatly appreciated!