Just one more question; hope you can help. Since we are staying in Alexandria, we will be using Dash, Metrorail and Circulator for our transportation. I have tried to figure out the best way to pay, and guess I'm not as bright as I used to be. Would we be better off paying individually each time on each type of transportation, or would a Senior Smartrip be the way to go? Metrorail is a little confusing about it, so I thought maybe one of you folks could help us out. We are going to have five full days in the area. Thanks again for your help; you all have helped us with our other questions.