This is real tickets pic of
Asahiyama dobutsuen(Zoo) kippu(ticket)[旭山度動物園きっぷ].http://blog-imgs-30-origin.fc2.com/m/o/k/mokeiorz/asahiyamazoo_001.jpg
(not Asahiyama dobutsuen(Zoo) "access" kippu(ticket)
(access" kippu is Zoo ticket less version)http://www.jrhokkaido.co.jp/travel/asahiyamazoo/access.htmlhttp://www.jrhokkaido.co.jp/network/kipp/c_6.html#zoo
from top (4 tickets as 1)
- Zoo ticket (入園利用券)
- round(往復) Bus (バス) ticket from/to JR Asahikawa* stn
- JR train ticket for back B* to A（かえり券）
- JR train ticket for going A to B*（ゆき券）
(*Zoo name is "Asahi-yama[旭山]", JR station name is Asahi-kawa[旭川])
JR "Zoo ticket"(both type) are not sold out.
but if "Zoo train's seat fee" first u must pay regular saet fee 2260Y(not 510Y)/one way.
"Zoo train" are just one of (seasonal) regular limited Exp tain.
So anybody can book without JR special ticket.
no crossing gate just walk down to up another platform [No.4,5 or 6 to 7 or 8].http://www.jrhokkaido.co.jp/network/barrier/057/sapporo-map.html
listen "transfer anounce" before arriving Sapporo.
(ask JR ticket office staff of New[Shin]-Chitose AP stn easy)
Japanese announce say "*-bansen".
(* to No.7 is "Nana-bansen" / to 8 "hachi-bansen")
Just if transfer enough time gete out possible.
(for eating,shopping,stay or also side trip ex Otal[小樽*] possible)
I dont know ur travel detail but using special ticket better* maybe.
(* from New[Shin]-Chitose AP stn[新千歳駅] version：7900Y)