What if you purchase the Japan Rail Pass...You get a voucher mailed to you in the States. You have to present at a Japan Rail Center to get your JR Pass...then you can only reserve seats after that? So how do I reserve seats (and luggage) on the day I am flying in? Trying to go HND to Kyoto. We are a family of 4 and will have 4 pieces of luggage that are mid to large size.