I am travelling to DC from RIC on a Monday in December. i need to get a long-term parking space. Metro website says there are 15-17 spots. Makes me nervous for a high-commuter station like Springfield. Are all the spots usually taken? Like I said, I'd be looking for a long-term spot on Monday but remember this is before the holidays. Not sure if that will make the demand higher or lower. I'd love to get an opinion from people who frequent this metro. Thanks!