Family of 5 travelling from Florida with 14 year old boy and 10yo girl. We'll be staying in Columbia Maryland. Here is the plan; Driving from Florida April 8. Duration of trip is April 8-13, Would like to do a day in Washington, and a day in Pa. In Washington, one day, musueum and whatever tickets for venues we can purchase online prior to getting there. For PA, going to the Chocolate Factory, and the Amish country. Possibly would like to drive to Dover Delaware for a day. The kids are disnyed out and Universal Studioed out, therefore, Theme park not an option. Will appreciate any ideas of to do's. I've read in a previous post to drive to Greenbelt and take the train into DC. Is this still advisable?