Request a pickup at a centrally-located DC spot; it is suggested that tours begin in around the White House. Departure times are available anytime between 9am and 8pm on the quarter hour. The minimum pedicab tour is 1 hour, after that, the time is prorated at $1.25/hour, payable direct.
The pedicabs fit 2 adults comfortably, and 3 adults if you get cozy. Two children (age 8 or under) are welcome to sit on laps, and an umbrella stroller can be stored on the pedicab.
Pedal around the landmarks in the western and southern parts of the National Mall, including the Vietnam Memorial, Lincoln Memorial, Korean War Memorial, Martin Luther King Jr Memorial, Roosevelt Memorial, Jefferson Memorial, WWII Memorial, and the Washington Monument. You can get out to explore further and take photos whenever you like. During your journey, your guide will provide informed commentary on the sights.