I've read that you can reserve a seat on the Tokyo-Kyoto Hikari train at a Travel Service Center (Midori-no-madoguchi) at a JR station.
Two questions:
1) Can I reserve this seat (and also exchange my JR Pass voucher for a real ticket) several days in advance of the day I intend to travel?
2) Can I exchange my voucher and my wife's voucher by myself? Does she need to be with me when I make the exchange or can I just take her passport.
Thanks