Our flight gets into Haneda at 4:15AM Sept. 3rd and we planned to go to Kyoto via JR immediately after landing. The Haneda office doesn't open until 7:45am. Is there another option to exchange our vouchers?
Other logistical questions, once we get to Tokyo Station:
How often do trains leave Tokyo station to Kyoto? Will I need to reserve a seat? Can I only ride certain trains with the JR pass?