the passport books can be purchased at the giftshop just inside the international gateway entrance to the park....probably some of the other gift shops as well, but, that's were we bought the one for our dd...the cost is like $8 or $9 dollars, so, don't get sucked into paying more from somewhere else....my dd really enjoyed doing the passports....when you visit each "country", you put that stamp in the appropriate place and one of the cm's from that country will sign the passport and usually write something in their native scrib in the passport as well....It was a good way to get a then 5 yr old interested in world showcase....it, along with the kidcot stations, keep her motivated and excited to go from one country to the next....It is 8 years later now and I can honestly say that WS is still our favorite part of any park at WDW. ps: there are also fantastic native entertainment in each of the pavillions and WS is also a good place for character meetings....