We're spending 5 days in NYC then renting a car to explore the Hudson Valley and Cooperstown. I figured we'd take the train up to Poughkeepsie and rent the car but I can't find a car rental agency in the whole dang Hudson Valley that either is open for dropoff on Saturday afternoon so we can get the train back to NYC then Newark for our Sat night flight out, or that doesn't charge an enormous drop off fee at Newark. So now I'm thinking of picking up the car at Newark and doing a regular round trip, picking up Wed am and dropping off Sat pm. Is this a bad idea in some way that I don't know? Is there a better spot in the NYC area to rent?