I have been reading the posts I could find about the Metro, but my direct question is which type of card should we get. We will be staying in Arlington, from May 27-June4, and will be riding the metro at Crystal City into DC, but I don't know if we will be needing the metrobus or not. We will be visiting DC pretty much daily. So, would it be to my advantage to get a SMARTRIP card where it can be used for both and just reload it as needed? Or should I just get the 7 day fast pass for the rail and then a separate card for the bus? I want whatever is going to be the most economical for us as there are 6 of us. I also am very confused by the maps on the website and the schedules, and trying to figure out what the fare is going to be from one place to the next, but I will keep working at it to hopefully figure it all out. But if there is any advice for that, please give it. Thanks in advance for any suggestions you have.