Would it be a good idea to get a SmarTrip card and just use that for everyone for the various metro rides? There will be 7 of us in our party, can we swipe it 7 times to get on the metro or should we get metrorail unlimited passes for everyone? I don't know how many buses we will take-staying in Alexandria, will we use the bus in DC itself or just the rail? We will be there for 7 days .
Also, is planning 2 museums/day enough, too much, just right? If we went to say the Am History museum in the morning and the Air/Space in the afternoon will that be enough time, too much time under normal viewing conditions?
Also, is planning 2 museums/day enough, too much, just right? If we went to say the Am History museum in the morning and the Air/Space in the afternoon will that be enough time, too much time under normal viewing conditions?

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. I will look into getting tickets online for things that we can.
Is this kind of day tour our only real option? Is there another way to get into DC and maybe spend one night?