We're hoping to make a spring 2012 trip to visit Williamsburg, VA and Washington D.C. Any suggestions on where to camp ? We've got a big 'ole travel trailer. Any experiences in those areas ? Any tips - camping related or not ? Could we camp in one central location and just drive to both WIlliamsburg and D.C. ? What month is best to visit ? Missing school is not a factor. Thanks so much!! Mitzi