No need booking, only red one No.101 is so, though.https://goo.gl/vZG4hM
Kencho-kitaguchi(県庁北口) is so.https://goo.gl/nRVK4G
prefectural office = 県庁 (kenchou)
north side(exit) = 北口 (kita-guchi),
口(kuchi) means "mouth" = gate, exit and more meanings wider.
Blue bus that recorded in street view is not Yanbaru,
but same place, just shared multiple local bus companies, no worry.
There is no bus stops on the West side of the prefectural office,
probably it is wrong to have read kanji "北(North)" as "西(West)" when making EN pages.
If translator is a Japanese, will not mistake read both kanji, but if by a foreigner may do it.
And it seems that the EN page of Bus schedule has not been updated to the latest.
Do you want to send complaints yourself?https://oki-park.jp/kaiyohaku/inq/
Just take a bording ticket(整理券 seiri-ken, small paper with section number) when getting in, and sit in vacant seat.http://yanbaru-expressbus.com
Bus fare is 1900Y/oneway, adult (including sales tax, and no need tip)
If no coin, you have to exchange money(両替 ryogae) fr 1000Y bill/note when paying (getting off).
(No exchanging fee, just insert the payment machine slot.)
2000, 5000 and 10000Y bill/note are refused cases mostly even in out of Okinawa,
so pls exchange it somewhere(hotel front, coveni and more stores or) beforehand if possible.
You cannot use IC card(OKICA for monorails and local buses in Okinawa, Suica and more) for this bus.https://www.yui-rail.co.jp/ticketinfo/okicahttps://www.visitokinawa.jp/transportation/transportation-in-okinawa