Its a long day. Make sure you take a good book, and some music, and a travel pillow. Well worth the visit to smash it out in a day.
Fantastic trip with lots fitted into the one day, was a bit chaotic in the morning getting onto the bus but after that was amazing with lots of time at each stop for pics. The guide was really good and gave loads of information during the tour- would highly recommend for the money
We were visiting NYC from Australia and had only one day free to see Washington highlights. This bus trip satisfied those requirements fully. The staff were friendly and helpful. As long as you don't expect to see too much of Washington and understand that most of the time will be spent travelling from and back to NYC - then you should be happy with the trip.